Pub Date : 2023-04-14DOI: 10.34031/2071-7318-2023-8-4-87-96
A. Bol'shakov, S. Tikunova
The problem of preservation and transformation of the existing dendropark and natural forest in the conditions of urban development of the middle zone of the city is considered. The park is located in the scientific campus of the Siberian Branch of the Academy of Sciences in Irkutsk. The territory has the properties of a landscape park. At the same time, it is actively used as a walking area and for sports activities. There are risks of using the land for housing construction because the park is surrounded by intensive urban development. The research proves its recreational and architectural landscape value. The basis of the spatial structure is the particular combination of glades and forest plantations of the park. The system of footpaths, which took shape over 60 years, is a picturesque network that at first glance seems random. The study of the territory allows to identify patterns in the organization of the network. A highway dissects the forest area. A bicycle bridge is proposed in the project for crossing the road by pedestrians and cyclists. The design and architectural form of the bridge minimize the impact on the landscape of this structure. The bridge is designed as two spirals suspended from two high masts. Its length of 210 m, it covers an area with a radius of less than 20 meters. The microrelief on the hillside, represented by micro-watersheds and hollows, makes it possible to differentiate new plantings in the park according to the landscape properties due to this microrelief.
{"title":"PRINCIPLES OF URBAN ORGANIZATION OF THE PARK IN IRKUTSK","authors":"A. Bol'shakov, S. Tikunova","doi":"10.34031/2071-7318-2023-8-4-87-96","DOIUrl":"https://doi.org/10.34031/2071-7318-2023-8-4-87-96","url":null,"abstract":"The problem of preservation and transformation of the existing dendropark and natural forest in the conditions of urban development of the middle zone of the city is considered. The park is located in the scientific campus of the Siberian Branch of the Academy of Sciences in Irkutsk. The territory has the properties of a landscape park. At the same time, it is actively used as a walking area and for sports activities. There are risks of using the land for housing construction because the park is surrounded by intensive urban development. The research proves its recreational and architectural landscape value. The basis of the spatial structure is the particular combination of glades and forest plantations of the park. The system of footpaths, which took shape over 60 years, is a picturesque network that at first glance seems random. The study of the territory allows to identify patterns in the organization of the network. A highway dissects the forest area. A bicycle bridge is proposed in the project for crossing the road by pedestrians and cyclists. The design and architectural form of the bridge minimize the impact on the landscape of this structure. The bridge is designed as two spirals suspended from two high masts. Its length of 210 m, it covers an area with a radius of less than 20 meters. The microrelief on the hillside, represented by micro-watersheds and hollows, makes it possible to differentiate new plantings in the park according to the landscape properties due to this microrelief.","PeriodicalId":9367,"journal":{"name":"Bulletin of Belgorod State Technological University named after. V. G. Shukhov","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77812973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-14DOI: 10.34031/2071-7318-2023-8-4-106-118
D. Shabanov
The task of collective movement of load by wheeled robots has kinematic redundancy of drives. It allows distributing traction forces without changing the trajectory and velocity of the system. In this way, it is possible to define additional traffic quality criteria which the traction control system should strive to achieve. In addition, efficient distribution will allow the robots to move without wheel slip at a higher speed than classical control methods. Robots and cargo combined into one system mechanically and informationally, form a variable configuration transport cell (VCTC). The following transportation quality criteria are considered: no wheel slippage, maintaining a given speed, no soft bumps, minimizing work in the generator mode, maintaining the desired final charge levels of the robot batteries after transportation. The proposed methods for the efficient distribution of traction forces are based on the finding local minimum and on the Hebbian learning principle. Tests are carried out in the Simulink using the dynamic mathematical model of the VCTC. In the case under consideration, new distribution methods made it possible to increase the maximum allowable turn entry speed by 27% compared with classical control approaches. At a lower speed new method of distribution showed good results on additional transportation quality criteria. The presented material can also be used for multi-wheeled robots with steerable drive wheels.
{"title":"EFFICIENT DISTRIBUTION OF TRACTION FORCES BETWEEN ROBOTS DURING COOPERATIVE CARGO TRANSPORTATION","authors":"D. Shabanov","doi":"10.34031/2071-7318-2023-8-4-106-118","DOIUrl":"https://doi.org/10.34031/2071-7318-2023-8-4-106-118","url":null,"abstract":"The task of collective movement of load by wheeled robots has kinematic redundancy of drives. It allows distributing traction forces without changing the trajectory and velocity of the system. In this way, it is possible to define additional traffic quality criteria which the traction control system should strive to achieve. In addition, efficient distribution will allow the robots to move without wheel slip at a higher speed than classical control methods. Robots and cargo combined into one system mechanically and informationally, form a variable configuration transport cell (VCTC). The following transportation quality criteria are considered: no wheel slippage, maintaining a given speed, no soft bumps, minimizing work in the generator mode, maintaining the desired final charge levels of the robot batteries after transportation. The proposed methods for the efficient distribution of traction forces are based on the finding local minimum and on the Hebbian learning principle. Tests are carried out in the Simulink using the dynamic mathematical model of the VCTC. In the case under consideration, new distribution methods made it possible to increase the maximum allowable turn entry speed by 27% compared with classical control approaches. At a lower speed new method of distribution showed good results on additional transportation quality criteria. The presented material can also be used for multi-wheeled robots with steerable drive wheels.","PeriodicalId":9367,"journal":{"name":"Bulletin of Belgorod State Technological University named after. V. G. Shukhov","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76052707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-14DOI: 10.34031/2071-7318-2023-8-4-67-76
M. Ivina, P. Rakhimova
The article provides a comparative analysis of the experience of designing domestic and foreign public spaces in the structure of multifunctional youth complexes. The relevance of the topic is justified by the fact that modern public spaces are multifunctional objects in which leisure, cultural, educational and other activities of young people can be implemented. The article determines the types of public spaces such as sports grounds, amphitheater, atrium, fab lab, eco-space, assembly hall, Blackbox multifunctional hall in youth complexes, studies the functional composition and planning structure of public spaces, as well as the ways to organize various events and highlights the ways of interaction of public spaces with the structure of the youth complex. The elements of improvement are integrated into the structure of the complex. Public spaces can be the main function of the complex (fab lab, Blackbox hall), recreational and communication (atrium) or secondary (amphitheater, eco-space). Eco-spaces, presented in the form of urban farms, "green" laboratories are of particular interest. The article shows the specificity of foreign public spaces, which is in interactivity, multifunctionality, versatility, innovative solutions, the use of "green technologies", modern materials and design solutions and reveals the problems in architectural and planning solutions of domestic public spaces such as standard solutions, monofunctionality. The development of architectural and planning solutions for public spaces in the structure of multifunctional youth complexes in accordance with the interests of young people will allow developing various scenarios such as training, self-education, communication, entertainment.
{"title":"PUBLIC SPACES IN THE STRUCTURE OF MULTIFUNCTIONAL YOUTH SPACES","authors":"M. Ivina, P. Rakhimova","doi":"10.34031/2071-7318-2023-8-4-67-76","DOIUrl":"https://doi.org/10.34031/2071-7318-2023-8-4-67-76","url":null,"abstract":"The article provides a comparative analysis of the experience of designing domestic and foreign public spaces in the structure of multifunctional youth complexes. The relevance of the topic is justified by the fact that modern public spaces are multifunctional objects in which leisure, cultural, educational and other activities of young people can be implemented. The article determines the types of public spaces such as sports grounds, amphitheater, atrium, fab lab, eco-space, assembly hall, Blackbox multifunctional hall in youth complexes, studies the functional composition and planning structure of public spaces, as well as the ways to organize various events and highlights the ways of interaction of public spaces with the structure of the youth complex. The elements of improvement are integrated into the structure of the complex. Public spaces can be the main function of the complex (fab lab, Blackbox hall), recreational and communication (atrium) or secondary (amphitheater, eco-space). Eco-spaces, presented in the form of urban farms, \"green\" laboratories are of particular interest. The article shows the specificity of foreign public spaces, which is in interactivity, multifunctionality, versatility, innovative solutions, the use of \"green technologies\", modern materials and design solutions and reveals the problems in architectural and planning solutions of domestic public spaces such as standard solutions, monofunctionality. The development of architectural and planning solutions for public spaces in the structure of multifunctional youth complexes in accordance with the interests of young people will allow developing various scenarios such as training, self-education, communication, entertainment.","PeriodicalId":9367,"journal":{"name":"Bulletin of Belgorod State Technological University named after. V. G. Shukhov","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80509773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-12DOI: 10.34031/2071-7318-2023-8-6-65-75
L. Kachemtseva, M. Arslan
Traditionally, the concept of a "social city" is illustrated by examples of the largest urban-planning entities. In this paper, a small settlement is considered – Valuyki, Belgorod region, which is rarely done within the framework of the stated issues. The article traces the formation of the concept of "sotsgorod" and its transformation in the mid-1930s, due to the change in the urban planning and architectural paradigm in the Soviet Union during this period. This study is aimed at identifying urban planning and architectural features of the implementation of the concept of "social city" on the territory of a small settlement. The authors of the study applied an integrated approach. The geographical and topographic features of the location of the settlement are determined. The conditions and history of the emergence, the main stages of the formation of the working settlement in the pre-war period are studied. The social composition of the inhabitants has been revealed. The article analyzes the town-planning and planning features, the specifics of the functional solution of the settlement that developed in the 1930s. The planning, transport structures and functional content of the Social Town at the time of the emergence of the work settlement and in the pre-war period are graphically restored. The main types of residential buildings in the residential area of the Social Town, their architectural features and stylistic affiliation of individual public buildings are determined. The potential of the studied urban planning structure and possible prospects for the development of this territory as part of the city of Valuyki are indicated.
{"title":"FEATURES OF THE IMPLEMENTATION OF THE CONCEPT OF \"SOTSGOROD\" IN ARCHITECTURAL AND URBAN PLANNING PRACTICE IN THE TERRITORY BELGOROD REGION IN THE 1930S. (ON THE EXAMPLE OF THE SOTSGORODOK MICRODISTRICT OF VALUYKI)","authors":"L. Kachemtseva, M. Arslan","doi":"10.34031/2071-7318-2023-8-6-65-75","DOIUrl":"https://doi.org/10.34031/2071-7318-2023-8-6-65-75","url":null,"abstract":"Traditionally, the concept of a \"social city\" is illustrated by examples of the largest urban-planning entities. In this paper, a small settlement is considered – Valuyki, Belgorod region, which is rarely done within the framework of the stated issues. The article traces the formation of the concept of \"sotsgorod\" and its transformation in the mid-1930s, due to the change in the urban planning and architectural paradigm in the Soviet Union during this period. This study is aimed at identifying urban planning and architectural features of the implementation of the concept of \"social city\" on the territory of a small settlement. The authors of the study applied an integrated approach. The geographical and topographic features of the location of the settlement are determined. The conditions and history of the emergence, the main stages of the formation of the working settlement in the pre-war period are studied. The social composition of the inhabitants has been revealed. The article analyzes the town-planning and planning features, the specifics of the functional solution of the settlement that developed in the 1930s. The planning, transport structures and functional content of the Social Town at the time of the emergence of the work settlement and in the pre-war period are graphically restored. The main types of residential buildings in the residential area of the Social Town, their architectural features and stylistic affiliation of individual public buildings are determined. The potential of the studied urban planning structure and possible prospects for the development of this territory as part of the city of Valuyki are indicated.","PeriodicalId":9367,"journal":{"name":"Bulletin of Belgorod State Technological University named after. V. G. Shukhov","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81011195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-12DOI: 10.34031/2071-7318-2023-8-6-48-54
A. Dolzhenko, A. Naumov, O. Shchenyatsky
The quality of life cycle management of flat rolled roofs depends on the effectiveness of the technology for assessing their physical deterioration, the value of which is significantly affected by the operating conditions of roofs and sources of impacts. Flat rolled roofs are the most common technical solutions in the real estate and are very defect-intensive building systems, the physical deterioration of which affects the structural safety and functional reliability not only of them, but of the entire building as a whole. Defects in flat rolled roofs, as well as defects in building structures in general, are in close organizational and technological relationship, in which the life cycle of an individual defect can be a synergistic multiplication or subtraction in defects life cycle parameters. The key flaw of modern methods for assessing physical deterioration are the initial and predominantly manual instrumental studies, in connection with which the methods are overly simplified, templated, subjective in natural assessment of life cycle resource intensity. In this regard, it seems promising targeted research related to the comprehensive improvement for construction and technical flaw detection methods, both in software improving that increases the reliability and quality of the factual result, and algorithms for predictive estimation of individual defects and building systems life cycles. That manages life cycle more effectively in the media of practical methods for dynamic defects analyzing and assessing the technical condition of structures in general. The paper presents mainline in improving of method for assessing the physical deterioration of flat rolled roofs, quantitatively taking into account the combined impact of defects on building system technical condition at its life cycle, significant expanding the operational tools for building technical management.
{"title":"FLAT ROLL ROOFS LIFE CYCLE MANAGEMENT IMPROVING WITH ADVANCED TECHNICAL STATE INSPECTION","authors":"A. Dolzhenko, A. Naumov, O. Shchenyatsky","doi":"10.34031/2071-7318-2023-8-6-48-54","DOIUrl":"https://doi.org/10.34031/2071-7318-2023-8-6-48-54","url":null,"abstract":"The quality of life cycle management of flat rolled roofs depends on the effectiveness of the technology for assessing their physical deterioration, the value of which is significantly affected by the operating conditions of roofs and sources of impacts. Flat rolled roofs are the most common technical solutions in the real estate and are very defect-intensive building systems, the physical deterioration of which affects the structural safety and functional reliability not only of them, but of the entire building as a whole. Defects in flat rolled roofs, as well as defects in building structures in general, are in close organizational and technological relationship, in which the life cycle of an individual defect can be a synergistic multiplication or subtraction in defects life cycle parameters. \u0000The key flaw of modern methods for assessing physical deterioration are the initial and predominantly manual instrumental studies, in connection with which the methods are overly simplified, templated, subjective in natural assessment of life cycle resource intensity. In this regard, it seems promising targeted research related to the comprehensive improvement for construction and technical flaw detection methods, both in software improving that increases the reliability and quality of the factual result, and algorithms for predictive estimation of individual defects and building systems life cycles. That manages life cycle more effectively in the media of practical methods for dynamic defects analyzing and assessing the technical condition of structures in general. \u0000The paper presents mainline in improving of method for assessing the physical deterioration of flat rolled roofs, quantitatively taking into account the combined impact of defects on building system technical condition at its life cycle, significant expanding the operational tools for building technical management.","PeriodicalId":9367,"journal":{"name":"Bulletin of Belgorod State Technological University named after. V. G. Shukhov","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91050850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-12DOI: 10.34031/2071-7318-2023-8-6-76-84
A. Grigorenko, T. Duyun
The article demonstrate the technique for modeling the form of natural oscillations, as well as the amplitude and mode of forced oscillations of the HAAS VF-1 vertical milling machine. As initial data, a publicly available 3D model of load-bearing elements, information on the mass and dimensions of the spindle motor are used. In preparation for the simulation, the original solid model is idealized by removing small chamfers, fillets, and small diameter holes. Movable joints with linear rolling guides and ball bearings are replaced by rigid joints, since vibration damping in these units is not considered. During the first simulation, ten natural frequencies with the largest values of the oscillation amplitude are obtained. The second simulation shows, the influence of the spindle drive layout (coaxial installation of the electric motor with the spindle through a cam clutch or connection using a toothed belt transmission) and additional devices for dissipating vibration energy (mass and structural dampers in the form of structural elements articulated through plastic bushings) is revealed by the magnitude of forced steady-state oscillations that may occur during the processing of the part.
{"title":"SIMULATION OF NATURAL FREQUENCIES AND FORCED OSCILLATION MAGNITUDES OF A VERTICAL MILLING MACHINE","authors":"A. Grigorenko, T. Duyun","doi":"10.34031/2071-7318-2023-8-6-76-84","DOIUrl":"https://doi.org/10.34031/2071-7318-2023-8-6-76-84","url":null,"abstract":"The article demonstrate the technique for modeling the form of natural oscillations, as well as the amplitude and mode of forced oscillations of the HAAS VF-1 vertical milling machine. As initial data, a publicly available 3D model of load-bearing elements, information on the mass and dimensions of the spindle motor are used. In preparation for the simulation, the original solid model is idealized by removing small chamfers, fillets, and small diameter holes. Movable joints with linear rolling guides and ball bearings are replaced by rigid joints, since vibration damping in these units is not considered. During the first simulation, ten natural frequencies with the largest values of the oscillation amplitude are obtained. The second simulation shows, the influence of the spindle drive layout (coaxial installation of the electric motor with the spindle through a cam clutch or connection using a toothed belt transmission) and additional devices for dissipating vibration energy (mass and structural dampers in the form of structural elements articulated through plastic bushings) is revealed by the magnitude of forced steady-state oscillations that may occur during the processing of the part.","PeriodicalId":9367,"journal":{"name":"Bulletin of Belgorod State Technological University named after. V. G. Shukhov","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79608216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-12DOI: 10.34031/2071-7318-2023-8-6-17-25
A. Horina, T. Shelkovnikova
In the course of the conducted studies, the phase components of clinker bricks and porcelain stoneware are determined by X-ray phase analysis. Microstructures of the studied samples are studied using a scanning electron microscope. The analysis of the phase composition and microstructure of the shard allows determining the qualitative and quantitative characteristics of the shapes and sizes of crystals, the X-ray amorphous phase, the structure of porosity, to establish the relationship between the structure and high physical and mechanical parameters. To obtain products with high strength, it is necessary to form a monolithic structure of a ceramic shard, represented by a framework of crystalline neoplasms connected by an X-ray amorphous phase. Quartz crystals 55-65%, mullite 9-12%, cristobalite 4 – 8%, leucite 4 – 7%, hematite 1 – 4%, etc. are fixed in samples of high–strength building ceramics. Due to the different production technologies of clinker bricks and porcelain stoneware, the crystallization of mullite of various types occurs: in clinker – needle-shaped habit, in porcelain stoneware – finely dispersed. It is found that the pores have a rounded closed shape of nano- and micrometer size from 1 to 15 microns. The high content of melts in the charge for porcelain stoneware ensures the formation of a large amount of amorphous phase and its homologation of crystalline neoplasms
{"title":"COMPARATIVE ANALYSIS OF THE STRUCTURE AND PHASE COMPOSITION OF HIGH-STRENGTH CERAMIC PRODUCTS","authors":"A. Horina, T. Shelkovnikova","doi":"10.34031/2071-7318-2023-8-6-17-25","DOIUrl":"https://doi.org/10.34031/2071-7318-2023-8-6-17-25","url":null,"abstract":"In the course of the conducted studies, the phase components of clinker bricks and porcelain stoneware are determined by X-ray phase analysis. Microstructures of the studied samples are studied using a scanning electron microscope. The analysis of the phase composition and microstructure of the shard allows determining the qualitative and quantitative characteristics of the shapes and sizes of crystals, the X-ray amorphous phase, the structure of porosity, to establish the relationship between the structure and high physical and mechanical parameters. To obtain products with high strength, it is necessary to form a monolithic structure of a ceramic shard, represented by a framework of crystalline neoplasms connected by an X-ray amorphous phase. Quartz crystals 55-65%, mullite 9-12%, cristobalite 4 – 8%, leucite 4 – 7%, hematite 1 – 4%, etc. are fixed in samples of high–strength building ceramics. Due to the different production technologies of clinker bricks and porcelain stoneware, the crystallization of mullite of various types occurs: in clinker – needle-shaped habit, in porcelain stoneware – finely dispersed. It is found that the pores have a rounded closed shape of nano- and micrometer size from 1 to 15 microns. The high content of melts in the charge for porcelain stoneware ensures the formation of a large amount of amorphous phase and its homologation of crystalline neoplasms","PeriodicalId":9367,"journal":{"name":"Bulletin of Belgorod State Technological University named after. V. G. Shukhov","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83911845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-12DOI: 10.34031/2071-7318-2023-8-6-94-101
A. Shubin, A. Smolovik, V. Vasil'ev
The paper proposes the concept of using a machine with a combined stroke based on a wheeled excavator equipped with a tilt-turning device for the repair and maintenance of railway tracks. The current maintenance of the track includes the systematic supervision of the condition of the track structures and track devices and their maintenance in a condition that guarantees the safe movement of trains. It is grounded the expediency of the using road-rail vehicle and the use of tilt-turning devices for various types of work, such as lifting and straightening the track, changing sleepers, laying ballast, clearing railway tracks from snow, and much more. A promising domestic design of a tilt-turning device has been developed with the introduction of a hydraulic rotary actuator into the design. A 3D model of the developed tilt-turning device is built in CAD KOMPAS-3D. The algorithm and the generalized method for calculating of the rotary hydraulic cylinder are presented. It is based on the results of calculations the dependence of the value of the mean thread diameter on the axial force and the value of the angle of climb of the screw thread line from the thread step and the number of turns, allowing to choose the best thread parameters
{"title":"DEVELOPMENT OF THE DESIGN AND RESEARCH OF THE TILT-TURNING DEVICE FOR MULTIFUNCTIONAL COMPLEXES","authors":"A. Shubin, A. Smolovik, V. Vasil'ev","doi":"10.34031/2071-7318-2023-8-6-94-101","DOIUrl":"https://doi.org/10.34031/2071-7318-2023-8-6-94-101","url":null,"abstract":"The paper proposes the concept of using a machine with a combined stroke based on a wheeled excavator equipped with a tilt-turning device for the repair and maintenance of railway tracks. The current maintenance of the track includes the systematic supervision of the condition of the track structures and track devices and their maintenance in a condition that guarantees the safe movement of trains. It is grounded the expediency of the using road-rail vehicle and the use of tilt-turning devices for various types of work, such as lifting and straightening the track, changing sleepers, laying ballast, clearing railway tracks from snow, and much more. A promising domestic design of a tilt-turning device has been developed with the introduction of a hydraulic rotary actuator into the design. A 3D model of the developed tilt-turning device is built in CAD KOMPAS-3D. The algorithm and the generalized method for calculating of the rotary hydraulic cylinder are presented. It is based on the results of calculations the dependence of the value of the mean thread diameter on the axial force and the value of the angle of climb of the screw thread line from the thread step and the number of turns, allowing to choose the best thread parameters","PeriodicalId":9367,"journal":{"name":"Bulletin of Belgorod State Technological University named after. V. G. Shukhov","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91028059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-12DOI: 10.34031/2071-7318-2023-8-6-35-47
M. Mozgolov, E. Kozlova
In accordance with modern requirements for the design of buildings, designers are needed to use structural solutions that are resistant to progressive collapse. A space-working caisson-type overlap is one of such solutions. Spatial constructions are repeatedly statically indeterminate systems and their calculation is performed on a computer in software complexes based on the finite element method. A ribbed model can be created from various types of finite elements and get data that varies. One of the ways to control the finite element method is to calculate structures using different models. The purpose of the work is to search for the simplest and most accurate finite element model for calculating a ribbed reinforced concrete waffle slabs. The work is a continuation of verification studies of SCAD models for calculating reinforced concrete waffle slabs with a size of 9.0 x 11.55 m. The bending moments in the beams obtained by the analytical method using a rod model and a model created from three-dimensional elements are compared. The values of bending moments calculated analytically and using a solid-state model have similar values. The maximum deviations of the FEM from the analytical method of calculation are from -0.9 to +11.6%. The values of bending moments calculated using a solid-state model and a rod model have similar values. The maximum deviations range from -9.7 to +6.3%. The finite element model, the calculation of which is based on solving the volumetric problem of elasticity theory, is effective, but time-consuming to create and difficult to analyze the data obtained.
根据现代建筑设计的要求，设计师需要使用能够抵抗渐进倒塌的结构解决方案。空间工作沉箱式重叠是其中一种解决方案。空间结构是重复静不定系统，其计算是在基于有限元法的软件复合体的计算机上进行的。肋形模型可以从各种类型的有限元中创建，并获得不同的数据。控制有限元法的方法之一是用不同的模型计算结构。本文的目的是寻找计算带肋钢筋混凝土华夫板最简单、最精确的有限元模型。这项工作是对计算尺寸为9.0 x 11.55 m的钢筋混凝土华夫板的SCAD模型进行验证研究的继续。比较了用杆模型和三维单元模型解析得到的梁的弯矩。解析计算的弯矩值与采用固态模型计算的弯矩值相似。有限元计算结果与解析计算方法的最大偏差为-0.9 ~ +11.6%。采用固态模型和棒材模型计算的弯矩值相似。最大偏差范围为-9.7 ~ +6.3%。有限元模型的计算是建立在求解弹性理论的体积问题的基础上的，它是有效的，但创建时间长，所得到的数据分析困难。
{"title":"VERIFICATION OF CORE AND SOLID-STATE MODELS OF THE SCAD COMPUTING COMPLEX FOR THE CALCULATION OF REINFORCED-CONCRETE WAFFLE SLAB FLOOR SYSTEM","authors":"M. Mozgolov, E. Kozlova","doi":"10.34031/2071-7318-2023-8-6-35-47","DOIUrl":"https://doi.org/10.34031/2071-7318-2023-8-6-35-47","url":null,"abstract":"In accordance with modern requirements for the design of buildings, designers are needed to use structural solutions that are resistant to progressive collapse. A space-working caisson-type overlap is one of such solutions. Spatial constructions are repeatedly statically indeterminate systems and their calculation is performed on a computer in software complexes based on the finite element method. A ribbed model can be created from various types of finite elements and get data that varies. One of the ways to control the finite element method is to calculate structures using different models. The purpose of the work is to search for the simplest and most accurate finite element model for calculating a ribbed reinforced concrete waffle slabs. \u0000The work is a continuation of verification studies of SCAD models for calculating reinforced concrete waffle slabs with a size of 9.0 x 11.55 m. The bending moments in the beams obtained by the analytical method using a rod model and a model created from three-dimensional elements are compared. The values of bending moments calculated analytically and using a solid-state model have similar values. The maximum deviations of the FEM from the analytical method of calculation are from -0.9 to +11.6%. The values of bending moments calculated using a solid-state model and a rod model have similar values. The maximum deviations range from -9.7 to +6.3%. The finite element model, the calculation of which is based on solving the volumetric problem of elasticity theory, is effective, but time-consuming to create and difficult to analyze the data obtained.","PeriodicalId":9367,"journal":{"name":"Bulletin of Belgorod State Technological University named after. V. G. Shukhov","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81456917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-12DOI: 10.34031/2071-7318-2023-8-6-85-93
E. Hanina, O. Gudenko, O. Mordovskaya, S. Anciferov, V. Bogdanov
The degree of uniformity of distribution in the mixture of components largely determines the qualitative characteristics of the product prepared from it. For dry mixing of components, the use of horizontal blade mixers is quite widespread in enterprises of various industries. In the competitive conditions of the operation of enterprises, it becomes necessary to develop technical solutions that allow to increase the efficiency of operating mixing equipment at enterprises in the conditions of planned repair measures. Possibility of increasing degree of homogeneity of fine-grained mixture in horizontal blade mixer when through slot holes are made in blades is considered. Using a known software product, imitated simulations of dry mixing processes of two fine-grained components in models of a mixer body with different blade designs are performed. To study the mixing process, the method of mathematical planning of the experiment is used. Researches of obtained regression dependence characterizing change of coefficient of heterogeneity of two-component dry mixture depending on number of slit holes and their width are carried out, areas of rational values of studied parameters are established. State of mixture in mixer housings is compared with slotted holes in blades and without holes. It has been found that with steady state mixing processes, the mixture in the mixer body model with slotted holes in the blades has a more uniform particle distribution. The heterogeneity factor characterizing the quality of this mixture is less than that of the mixture in the model of a body with blades without holes.
{"title":"INVESTIGATION OF INFLUENCE OF SLOTTED HOLES IN BLADES OF HORIZONTAL BLADE MIXER ON QUALITY OF PREPARATION OF TWO-COMPONENT DRY MIXTURE","authors":"E. Hanina, O. Gudenko, O. Mordovskaya, S. Anciferov, V. Bogdanov","doi":"10.34031/2071-7318-2023-8-6-85-93","DOIUrl":"https://doi.org/10.34031/2071-7318-2023-8-6-85-93","url":null,"abstract":"The degree of uniformity of distribution in the mixture of components largely determines the qualitative characteristics of the product prepared from it. For dry mixing of components, the use of horizontal blade mixers is quite widespread in enterprises of various industries. In the competitive conditions of the operation of enterprises, it becomes necessary to develop technical solutions that allow to increase the efficiency of operating mixing equipment at enterprises in the conditions of planned repair measures. Possibility of increasing degree of homogeneity of fine-grained mixture in horizontal blade mixer when through slot holes are made in blades is considered. Using a known software product, imitated simulations of dry mixing processes of two fine-grained components in models of a mixer body with different blade designs are performed. To study the mixing process, the method of mathematical planning of the experiment is used. Researches of obtained regression dependence characterizing change of coefficient of heterogeneity of two-component dry mixture depending on number of slit holes and their width are carried out, areas of rational values of studied parameters are established. State of mixture in mixer housings is compared with slotted holes in blades and without holes. It has been found that with steady state mixing processes, the mixture in the mixer body model with slotted holes in the blades has a more uniform particle distribution. The heterogeneity factor characterizing the quality of this mixture is less than that of the mixture in the model of a body with blades without holes.","PeriodicalId":9367,"journal":{"name":"Bulletin of Belgorod State Technological University named after. V. G. Shukhov","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80214847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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