Pub Date : 2023-04-01DOI: 10.18698/0536-1044-2023-4-55-61
A. I. Yamanin
The paper describes application of the finite element method in the explicit formulation (Explicit) for dynamic calculation of the stress-strain state of the full-size crankshaft represented by a continuous model taking into account contact interaction with the supports and the rapidly varying nature of the loading. The procedure for preparing and imposing the corresponding force boundary conditions is described. The proposed calculation method makes it possible to simultaneously determine the instantaneous values of stresses due to the incoming torques and additional stresses caused by all types of oscillations (torsional, longitudinal and bending).
{"title":"Dynamic calculation of the crankshaft stress-strain state","authors":"A. I. Yamanin","doi":"10.18698/0536-1044-2023-4-55-61","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-4-55-61","url":null,"abstract":"The paper describes application of the finite element method in the explicit formulation (Explicit) for dynamic calculation of the stress-strain state of the full-size crankshaft represented by a continuous model taking into account contact interaction with the supports and the rapidly varying nature of the loading. The procedure for preparing and imposing the corresponding force boundary conditions is described. The proposed calculation method makes it possible to simultaneously determine the instantaneous values of stresses due to the incoming torques and additional stresses caused by all types of oscillations (torsional, longitudinal and bending).","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117083769","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 : 2023-04-01DOI: 10.18698/0536-1044-2023-4-38-45
A. Isaev, A. Raykov, A. Burmistrov, S. Salikeev
A Roots-type two-rotor vacuum pump with the rotors’ elliptical profile was designed, developed and manufactured. Its channels conductivity was measured experimentally at various angles of the rotors’ rotation and pressures. Experimental conductivity of the channels was determined in the flow molecular regime. Using the angle factor method implemented in the COMSOL Multiphysics package calculated values of the channel conductivity were obtained for a two-rotor vacuum pump. Deviations in calculated data from the experimental data were not exceeding 10%. Verification and validation of analytical expressions for conductivity of the non-contact pump slot channels demonstrated possibility of their application in mathematical models of the working process of the two-rotor vacuum pumps.
{"title":"Study of the backward flow in Roots-type vacuum pump with elliptical rotor profile in the gas flow molecular regime","authors":"A. Isaev, A. Raykov, A. Burmistrov, S. Salikeev","doi":"10.18698/0536-1044-2023-4-38-45","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-4-38-45","url":null,"abstract":"A Roots-type two-rotor vacuum pump with the rotors’ elliptical profile was designed, developed and manufactured. Its channels conductivity was measured experimentally at various angles of the rotors’ rotation and pressures. Experimental conductivity of the channels was determined in the flow molecular regime. Using the angle factor method implemented in the COMSOL Multiphysics package calculated values of the channel conductivity were obtained for a two-rotor vacuum pump. Deviations in calculated data from the experimental data were not exceeding 10%. Verification and validation of analytical expressions for conductivity of the non-contact pump slot channels demonstrated possibility of their application in mathematical models of the working process of the two-rotor vacuum pumps.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126171056","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 : 2023-04-01DOI: 10.18698/0536-1044-2023-4-10-20
A. Filippov, N. Shamarin, S. Tarasov, S. Fortuna, V. Utyaganova
Various industries are widely using the austenitic stainless steels, and these steels possess the potential to improve their mechanical properties through alloying and deformation machining. However, such material improvement could also affect the quality of its machine cutting. The paper studies the influence of intensive plastic deformation on structure and properties of the 08X18H10 steel alloyed with copper and manganese, as well as on the quality of its machining in turning under different structural states. It was established that the use of multilateral forging led to formation of a heavily deformed subgrain structure with the high dislocation density in the steel under study, and subsequent rolling caused additional formation of the differently oriented deformation microtwins and packs of nanotwins. These structural alterations contributed to increasing the strength and micro-hardness of the material. Analysis of the machine turned surface relief of the samples showed that using the intensive plastic deformation made it possible to significantly reduce the Ra and Rz roughness parameters compared to those samples not subjected to intensive plastic deformation. It was found that an increase in feed led to the growing micro-hardness of the material thin near-surface layer and to its smoother alteration in depth from the machined surface.
{"title":"Surface roughness after turning the austenitic 08X18H10 steel alloyed with copper and manganese depending on structure and properties formed by the intensive plastic deformation","authors":"A. Filippov, N. Shamarin, S. Tarasov, S. Fortuna, V. Utyaganova","doi":"10.18698/0536-1044-2023-4-10-20","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-4-10-20","url":null,"abstract":"Various industries are widely using the austenitic stainless steels, and these steels possess the potential to improve their mechanical properties through alloying and deformation machining. However, such material improvement could also affect the quality of its machine cutting. The paper studies the influence of intensive plastic deformation on structure and properties of the 08X18H10 steel alloyed with copper and manganese, as well as on the quality of its machining in turning under different structural states. It was established that the use of multilateral forging led to formation of a heavily deformed subgrain structure with the high dislocation density in the steel under study, and subsequent rolling caused additional formation of the differently oriented deformation microtwins and packs of nanotwins. These structural alterations contributed to increasing the strength and micro-hardness of the material. Analysis of the machine turned surface relief of the samples showed that using the intensive plastic deformation made it possible to significantly reduce the Ra and Rz roughness parameters compared to those samples not subjected to intensive plastic deformation. It was found that an increase in feed led to the growing micro-hardness of the material thin near-surface layer and to its smoother alteration in depth from the machined surface.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124581951","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 : 2023-04-01DOI: 10.18698/0536-1044-2023-4-3-9
O. Sharkov, A. Kalinin
Normal forces use to transfer the load makes it possible to increase load capacity and reliability of the free running mechanisms. Normal forces in the eccentric free running mechanisms are realized in engagement of the fine-module teeth that are cut on the outer cage inner surface and the outer surface of the eccentric rings. To ensure correct operation of the mechanism in jamming and wedging, value of the fine-module teeth cutting section angle should be selected from the equality condition of the radial clearance between the outer cage teeth and the eccentric ring in the entire working section. To solve the problem, calculation scheme is proposed and mathematical model is obtained that describes relationship between the fine-module cutting section angle and the mechanism geometric parameters. The nature of the main geometric parameters influence (radius, eccentricity, radial clearance, module, etc.) on the value of the teeth cutting section angle was established. It is shown that eccentricity provides the greatest influence on the working area size, radial clearance and module influences are less pronounced.
{"title":"Determination of the fine-module teeth cutting section in the eccentric free running mechanisms","authors":"O. Sharkov, A. Kalinin","doi":"10.18698/0536-1044-2023-4-3-9","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-4-3-9","url":null,"abstract":"Normal forces use to transfer the load makes it possible to increase load capacity and reliability of the free running mechanisms. Normal forces in the eccentric free running mechanisms are realized in engagement of the fine-module teeth that are cut on the outer cage inner surface and the outer surface of the eccentric rings. To ensure correct operation of the mechanism in jamming and wedging, value of the fine-module teeth cutting section angle should be selected from the equality condition of the radial clearance between the outer cage teeth and the eccentric ring in the entire working section. To solve the problem, calculation scheme is proposed and mathematical model is obtained that describes relationship between the fine-module cutting section angle and the mechanism geometric parameters. The nature of the main geometric parameters influence (radius, eccentricity, radial clearance, module, etc.) on the value of the teeth cutting section angle was established. It is shown that eccentricity provides the greatest influence on the working area size, radial clearance and module influences are less pronounced.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127703459","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 : 2023-04-01DOI: 10.18698/0536-1044-2023-4-62-71
L. P. Zheleznov, N. A. Laperdina
The topological optimization method was used to synthesize bionic structures for the promising small aircraft compartment made of aluminum alloy. Topological optimization was performed on the basis of the ESO-SIMP method using the ANSYS Workbench software tools. Influence of the design parameters, in particular, of the shell thickness, on the strength and weight characteristics of the compartment bionic structures after topological optimization was studied under the external loads action.
{"title":"Research on the synthesis of bionic thin-walled structures of the aircraft fuselage compartment type","authors":"L. P. Zheleznov, N. A. Laperdina","doi":"10.18698/0536-1044-2023-4-62-71","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-4-62-71","url":null,"abstract":"The topological optimization method was used to synthesize bionic structures for the promising small aircraft compartment made of aluminum alloy. Topological optimization was performed on the basis of the ESO-SIMP method using the ANSYS Workbench software tools. Influence of the design parameters, in particular, of the shell thickness, on the strength and weight characteristics of the compartment bionic structures after topological optimization was studied under the external loads action.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133144334","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 : 2023-04-01DOI: 10.18698/0536-1044-2023-4-46-54
N. Sosnovsky, V. Nguyen
Implementation of the vehicles optimal operating modes and improvement of their energy efficiency appears to be an urgent task. The paper considers a hovercraft with the hydraulic transmission. Combined mathematical model of hydraulic transmission and fan supplying air to the air cushion section was developed. Automatic control of the pump swashplate inclination angle with the vessel moving upon different support surfaces was analyzed in the MATLAB/Simulink environment in terms of increasing efficiency of the fan and system operation. The system calculation scheme is presented, and acceptable transient characteristics were obtained. The developed mathematical model makes it possible to select and assess optimal frequency of the hydraulic motor shaft rotation with the vessel moving upon different surfaces, analyze and improve the system energy efficiency. Using the proposed transmission control unit in a hovercraft allows maintaining the fan efficiency and the required vessel height above the supporting surface.
{"title":"Computational study of the hovercraft hydraulic transmission","authors":"N. Sosnovsky, V. Nguyen","doi":"10.18698/0536-1044-2023-4-46-54","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-4-46-54","url":null,"abstract":"Implementation of the vehicles optimal operating modes and improvement of their energy efficiency appears to be an urgent task. The paper considers a hovercraft with the hydraulic transmission. Combined mathematical model of hydraulic transmission and fan supplying air to the air cushion section was developed. Automatic control of the pump swashplate inclination angle with the vessel moving upon different support surfaces was analyzed in the MATLAB/Simulink environment in terms of increasing efficiency of the fan and system operation. The system calculation scheme is presented, and acceptable transient characteristics were obtained. The developed mathematical model makes it possible to select and assess optimal frequency of the hydraulic motor shaft rotation with the vessel moving upon different surfaces, analyze and improve the system energy efficiency. Using the proposed transmission control unit in a hovercraft allows maintaining the fan efficiency and the required vessel height above the supporting surface.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116228289","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 : 2023-04-01DOI: 10.18698/0536-1044-2023-4-21-29
S. Volkov, A. Remizov, A. Konovalov, V. M. Nerovnyy
It was established that the mode parameters determining efficiency of the plastics ultrasonic welding process include waveguide oscillation amplitude, welding static pressure, oscillation frequency, welding time and size of the fixed gap between the waveguide working end and the support. In each specific welding mode, an increase in the gap of more optimal value leads to a decrease in the breaking load; this is especially true in welding products of higher thickness. Welding could be performed on surfaces coated with various products. An expression was obtained to determine time and intensity coefficients of the ultrasonic welding mode. Fixture supports influence on quality and strength of the welded joints in the ultrasonic welding of polymeric materials was considered. When using an active support, strength and productivity of ultrasonic welding was much higher than in using the passive supports. Results of the experiments confirmed the relationship between the support oscillations amplitude and the heating, thickness and properties of the parts to be welded. A working cycle of the plastics ultrasonic welding is proposed, where the static welding pressure and the ultrasonic pulse time are ensuring maximum strength and tightness of the welded joint.
{"title":"Parameters of the polymeric materials ultrasonic welding","authors":"S. Volkov, A. Remizov, A. Konovalov, V. M. Nerovnyy","doi":"10.18698/0536-1044-2023-4-21-29","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-4-21-29","url":null,"abstract":"It was established that the mode parameters determining efficiency of the plastics ultrasonic welding process include waveguide oscillation amplitude, welding static pressure, oscillation frequency, welding time and size of the fixed gap between the waveguide working end and the support. In each specific welding mode, an increase in the gap of more optimal value leads to a decrease in the breaking load; this is especially true in welding products of higher thickness. Welding could be performed on surfaces coated with various products. An expression was obtained to determine time and intensity coefficients of the ultrasonic welding mode. Fixture supports influence on quality and strength of the welded joints in the ultrasonic welding of polymeric materials was considered. When using an active support, strength and productivity of ultrasonic welding was much higher than in using the passive supports. Results of the experiments confirmed the relationship between the support oscillations amplitude and the heating, thickness and properties of the parts to be welded. A working cycle of the plastics ultrasonic welding is proposed, where the static welding pressure and the ultrasonic pulse time are ensuring maximum strength and tightness of the welded joint.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114300406","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 : 2023-04-01DOI: 10.18698/0536-1044-2023-4-30-37
V. Makarov, A.Z. Kazaryan, F. Korolev
The paper considers schemes of pneumatic regulators, which operation principle is based on the jet force action effect on the flat plate. The main nodes of such regulators include the plate support and the compensatory circuit of the regenerative feedback forming the basis for building pneumatic control circuits that implement the basic laws of regulation. The proposed devices are able to improve static characteristics due to their linearity. Schemes are provided of aerostatic bearing, regenerative feedback, jet-pneumatic proportional and proportional-integral controllers, precession and differentiation block, proportional integral differential controller and semi-proportional controller.
{"title":"Pneumatic controllers based on the jet force action effect","authors":"V. Makarov, A.Z. Kazaryan, F. Korolev","doi":"10.18698/0536-1044-2023-4-30-37","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-4-30-37","url":null,"abstract":"The paper considers schemes of pneumatic regulators, which operation principle is based on the jet force action effect on the flat plate. The main nodes of such regulators include the plate support and the compensatory circuit of the regenerative feedback forming the basis for building pneumatic control circuits that implement the basic laws of regulation. The proposed devices are able to improve static characteristics due to their linearity. Schemes are provided of aerostatic bearing, regenerative feedback, jet-pneumatic proportional and proportional-integral controllers, precession and differentiation block, proportional integral differential controller and semi-proportional controller.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129765495","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 : 2023-03-01DOI: 10.18698/0536-1044-2023-3-110-119
N.O. Borschev
The paper considers two ways of maintaining temperature of the instrumentation equipment: using the heat pipes equipped with thermoelectric cooling plate on the compensation cavity and the control valve installed at the outlet of the evaporating radiator. Since the temperature of the contour heat pipe is mainly controlled by the temperature of the compensation cavity positioned behind the evaporator, maintaining the high-precision temperature mode of this device is an urgent task for the entire spacecraft thermal regime. In the first method, the evaporating radiator is heated or cooled depending on the plate device polarity. In the second, the compensation chamber temperature could be changed using the steam supplied to the compensation cavity by a regulator installed at the outlet of the evaporator. Temperature control using a valve is due to the fact that the steam of the working fluid enters the bellows under pressure, which depends on the temperature in the evaporator. Pressure difference between steam and gas causes the bellows to contract and expand, while the valve associated with it partially closes the openings in the housing, through which the steam enters the condenser and the compensation cavity. Detailed description of these devices operation is provided, and thermal hydraulic models of the contour heat pipes equipped with these two devices are compiled.
{"title":"Methods for controlling temperature of the instrumentation equipment using the contour heat pipe","authors":"N.O. Borschev","doi":"10.18698/0536-1044-2023-3-110-119","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-3-110-119","url":null,"abstract":"The paper considers two ways of maintaining temperature of the instrumentation equipment: using the heat pipes equipped with thermoelectric cooling plate on the compensation cavity and the control valve installed at the outlet of the evaporating radiator. Since the temperature of the contour heat pipe is mainly controlled by the temperature of the compensation cavity positioned behind the evaporator, maintaining the high-precision temperature mode of this device is an urgent task for the entire spacecraft thermal regime. In the first method, the evaporating radiator is heated or cooled depending on the plate device polarity. In the second, the compensation chamber temperature could be changed using the steam supplied to the compensation cavity by a regulator installed at the outlet of the evaporator. Temperature control using a valve is due to the fact that the steam of the working fluid enters the bellows under pressure, which depends on the temperature in the evaporator. Pressure difference between steam and gas causes the bellows to contract and expand, while the valve associated with it partially closes the openings in the housing, through which the steam enters the condenser and the compensation cavity. Detailed description of these devices operation is provided, and thermal hydraulic models of the contour heat pipes equipped with these two devices are compiled.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126255585","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 : 2023-03-01DOI: 10.18698/0536-1044-2023-3-101-109
S. V. Baranovski, Phyo Zaw Khaing
Fuselage is the main element of unmanned aerial vehicle, which parameters optimization could increase the structure strength and weight characteristics. Both the modern polymer composite materials with high specific characteristics and the advanced power circuits are able to assist in solving this problem. Selection and optimization of the structural power scheme of the unmanned aerial vehicle fuselage appear to be an urgent task. Structure loads under various flight and maneuver modes were analyzed. Eight fuselage structural power schemes were designed including classic, grid, auxetic and biosimilar structures. Operation of the power circuits made of carbon fiber exposed to the obtained loads was considered, and their stress-strain state was determined. Rational scheme was selected according to the minimum mass and maximum strength criteria, for which the main parameters were determined. Advantage of the promising power circuit over the classical one was shown. The results obtained are part of a comprehensive study of the promising structural power schemes made of polymer composite materials.
{"title":"Selection and optimization of a promising structural power scheme for the unmanned aerial vehicle fuselage made of polymer composite materials","authors":"S. V. Baranovski, Phyo Zaw Khaing","doi":"10.18698/0536-1044-2023-3-101-109","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-3-101-109","url":null,"abstract":"Fuselage is the main element of unmanned aerial vehicle, which parameters optimization could increase the structure strength and weight characteristics. Both the modern polymer composite materials with high specific characteristics and the advanced power circuits are able to assist in solving this problem. Selection and optimization of the structural power scheme of the unmanned aerial vehicle fuselage appear to be an urgent task. Structure loads under various flight and maneuver modes were analyzed. Eight fuselage structural power schemes were designed including classic, grid, auxetic and biosimilar structures. Operation of the power circuits made of carbon fiber exposed to the obtained loads was considered, and their stress-strain state was determined. Rational scheme was selected according to the minimum mass and maximum strength criteria, for which the main parameters were determined. Advantage of the promising power circuit over the classical one was shown. The results obtained are part of a comprehensive study of the promising structural power schemes made of polymer composite materials.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128161141","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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