Pub Date : 2019-11-01DOI: 10.36336/akustika20193485
O. Plitsyna, T. Rogova
The silencer’s scheme in which the duct is divided by vertical bent partitions into ranges series of expansion chambers is presented. The silencer’s scheme parameters ensuring even noise reduction in a wide frequency range are calculated. Abilities of the reactive silencer in exhaust ventilation systems are shown.
{"title":"SELECTING THE PARAMETERS OF THE REACTIVE SILENCER FOR EXHAUST VENTILATION SYSTEMS","authors":"O. Plitsyna, T. Rogova","doi":"10.36336/akustika20193485","DOIUrl":"https://doi.org/10.36336/akustika20193485","url":null,"abstract":"The silencer’s scheme in which the duct is divided by vertical bent partitions into ranges series of expansion chambers is presented. The silencer’s scheme parameters ensuring even noise reduction in a wide frequency range are calculated. Abilities of the reactive silencer in exhaust ventilation systems are shown.","PeriodicalId":42295,"journal":{"name":"Akustika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48091388","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 : 2019-11-01DOI: 10.36336/akustika20193413
N. Kuprikov, L. Ponyaev, M. Kuprikov
The new future High Ecology Efficiency as Acoustic Minimum Pressure for Nature Safety of the new Regular Polar Routes will be more perspective for Trans Continental Air Transport Operations by ICAO/IATA International Law Regulations. The more shortly Cross Polar Flight for Long-Haul Aircrafts (LHA) Routes by leader Airlines Teams are request to find new Geometrical Layout of Aircraft Design Projections. The increase in the dimension of LHA came into conflict with modern Aviation Infrastructure and led to the search for alternative options for constructively layout circuit solutions with sound and vibration issues in order to deal with this contradiction. A structural-parametric analysis of the influence of Infrastructure Constraints in the basing of LHA on the choice of alternative options for fuselage layout was carried out. The new Body Plane LHA and Lighter-then-Air (LTA) Vehicles with cover of Nano Film Solar Electro Systems will be more innovation projections for Worldwide Security Polar Air Transportation with reduce CO Pollution and Noise level.
{"title":"ECOLOGY ACOUSTIC MINIMUM PRESSURE OF POLAR ROUTES FOR HEAVY AIRCRAFTS AND LIGHTER THAN AIR VEHICLES WITH NANO FILM SOLAR ELECTRO SYSTEMS","authors":"N. Kuprikov, L. Ponyaev, M. Kuprikov","doi":"10.36336/akustika20193413","DOIUrl":"https://doi.org/10.36336/akustika20193413","url":null,"abstract":"The new future High Ecology Efficiency as Acoustic Minimum Pressure for Nature Safety of the new Regular Polar Routes will be more perspective for Trans Continental Air Transport Operations by ICAO/IATA International Law Regulations. The more shortly Cross Polar Flight for Long-Haul Aircrafts (LHA) Routes by leader Airlines Teams are request to find new Geometrical Layout of Aircraft Design Projections. The increase in the dimension of LHA came into conflict with modern Aviation Infrastructure and led to the search for alternative options for constructively layout circuit solutions with sound and vibration issues in order to deal with this contradiction. A structural-parametric analysis of the influence of Infrastructure Constraints in the basing of LHA on the choice of alternative options for fuselage layout was carried out. The new Body Plane LHA and Lighter-then-Air (LTA) Vehicles with cover of Nano Film Solar Electro Systems will be more innovation projections for Worldwide Security Polar Air Transportation with reduce CO Pollution and Noise level.","PeriodicalId":42295,"journal":{"name":"Akustika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45356293","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 : 2019-11-01DOI: 10.36336/akustika20193495
A. Shashurin, M. Goguadze, A. Chukarin
The purpose of this analysis is to approximate the analytical dependences which allow to calculate the vibrational energy loss coefficient at any frequency when calculating the noise from the axle lathe and boring machines. A regression analysis was conducted using the method of least squares. The paper presents the results of the regression coefficient calculations. The dependences obtained allow us to determine the loss coefficient value not only at the geometric mean frequencies of the octave spectrum, but also at the natural frequencies of oscillations.
{"title":"REGRESSION ANALYSIS OF THE COEFFICIENTS OF THE LOSS OF VIBRATIONAL ENERGY WHEN CALCULATING THE NOISE FROM OSSETIAN AND BORING MACHINES","authors":"A. Shashurin, M. Goguadze, A. Chukarin","doi":"10.36336/akustika20193495","DOIUrl":"https://doi.org/10.36336/akustika20193495","url":null,"abstract":"The purpose of this analysis is to approximate the analytical dependences which allow to calculate the vibrational energy loss coefficient at any frequency when calculating the noise from the axle lathe and boring machines. A regression analysis was conducted using the method of least squares. The paper presents the results of the regression coefficient calculations. The dependences obtained allow us to determine the loss coefficient value not only at the geometric mean frequencies of the octave spectrum, but also at the natural frequencies of oscillations.","PeriodicalId":42295,"journal":{"name":"Akustika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44363600","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 : 2019-11-01DOI: 10.36336/akustika20193435
D. Koshurnikov
The current system of information-gathering and analyzing which involves environment objects is aimed to form the magnitude of data using software and hardware systems. At the same time, geographic information systems (GIS) are widely used for primary analysis and visualization of the hygienic assessments results, including the noise factor, for the tasks of assessing the risk to public health. In turn, there is currently no complete interaction of software products with GIS, which requires the development, application and implementation of additional mechanisms for the source data formation and their interpretation. The result of the software products interface is new magnitudes of data obtained with consideration to the multidimensional heterogeneous information interface. First of all, this optimization allows reducing labor and time resources spent on bringing information to the uniformity. At the same time, the interface of calculation programs with GIS allows you to perform investigated area zoning, to form vector layers of such zones, to select the share of the exposed population by crossing the thematic layers in the GIS and solve a number of other tasks.
{"title":"ACOUSTIC MODELING FOR THE TASKS OF HYGIENIC ASSESSMENT OF THE URBAN ENVIRONMENT","authors":"D. Koshurnikov","doi":"10.36336/akustika20193435","DOIUrl":"https://doi.org/10.36336/akustika20193435","url":null,"abstract":"The current system of information-gathering and analyzing which involves environment objects is aimed to form the magnitude of data using software and hardware systems. At the same time, geographic information systems (GIS) are widely used for primary analysis and visualization of the hygienic assessments results, including the noise factor, for the tasks of assessing the risk to public health. In turn, there is currently no complete interaction of software products with GIS, which requires the development, application and implementation of additional mechanisms for the source data formation and their interpretation. The result of the software products interface is new magnitudes of data obtained with consideration to the multidimensional heterogeneous information interface. First of all, this optimization allows reducing labor and time resources spent on bringing information to the uniformity. At the same time, the interface of calculation programs with GIS allows you to perform investigated area zoning, to form vector layers of such zones, to select the share of the exposed population by crossing the thematic layers in the GIS and solve a number of other tasks.","PeriodicalId":42295,"journal":{"name":"Akustika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44674647","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 : 2019-11-01DOI: 10.36336/akustika201934118
A. Vasilyev
Pressure charging devices in different types of internal combustion engines is allowing to achieve a number of advantages: engine power and fuel effectiveness increasing, exhaust gases toxic reduction etc. Pressure charging systems may be classified by the different parameters. For the time being turbo-supercharger is the most popular unit of serial automobile engines pressure charging. But it has some negative properties. Therefore using of dynamic (acoustic) pressure charging devices is promising solution. Analysis of existing acoustic pressure charging systems is carried out. The perspectives of using of active sound emitters for acoustic pressure charging are described. Theoretical issues of automobile engines active acoustic charging are discussed. Construction of active charging system is suggested. Multifunctional approach to automobile internal combustion engines pressure charging and low frequency intake and exhaust noise reduction is suggested. The results described in this paper may be useful for further development and application of internal combustion engines with improved consumer’s and ecological characteristic.
{"title":"AUTOMOBILE INTERNAL COMBUSTION ENGINE PRESSURE CHARGING AND GAS-GUIDE LOW FREQUENCY NOISE REDUCTION USING ACTIVE SOUND SOURCES","authors":"A. Vasilyev","doi":"10.36336/akustika201934118","DOIUrl":"https://doi.org/10.36336/akustika201934118","url":null,"abstract":"Pressure charging devices in different types of internal combustion engines is allowing to achieve a number of advantages: engine power and fuel effectiveness increasing, exhaust gases toxic reduction etc. Pressure charging systems may be classified by the different parameters. For the time being turbo-supercharger is the most popular unit of serial automobile engines pressure charging. But it has some negative properties. Therefore using of dynamic (acoustic) pressure charging devices is promising solution. Analysis of existing acoustic pressure charging systems is carried out. The perspectives of using of active sound emitters for acoustic pressure charging are described. Theoretical issues of automobile engines active acoustic charging are discussed. Construction of active charging system is suggested. Multifunctional approach to automobile internal combustion engines pressure charging and low frequency intake and exhaust noise reduction is suggested. The results described in this paper may be useful for further development and application of internal combustion engines with improved consumer’s and ecological characteristic.","PeriodicalId":42295,"journal":{"name":"Akustika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44393528","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 : 2019-11-01DOI: 10.36336/akustika20193459
L. Pastukhova, V. Alekhin, S. Gorodilov, A. Sekacheva
The authors carried out the numerical analysis of vibration impact of subway on the multistory residential building. Supposed building site is situated in Yekaterinburg and placed above the subway line tunnels in the middle of the track between the stations. The analysis is aimed to simulate the initiation of vibration during the period when the train passes, to assess the impact of availability of vibration-damping layer on this process, and also to obtain values of vibrational accelerations in order to predict vibration levels and volumes of sound in reference points in living spaces.
{"title":"NUMERIC ANALYSIS OF VIBRATION IMPACT OF SUBWAY ON MULTI-STOREY BUILDING","authors":"L. Pastukhova, V. Alekhin, S. Gorodilov, A. Sekacheva","doi":"10.36336/akustika20193459","DOIUrl":"https://doi.org/10.36336/akustika20193459","url":null,"abstract":"The authors carried out the numerical analysis of vibration impact of subway on the multistory residential building. Supposed building site is situated in Yekaterinburg and placed above the subway line tunnels in the middle of the track between the stations. The analysis is aimed to simulate the initiation of vibration during the period when the train passes, to assess the impact of availability of vibration-damping layer on this process, and also to obtain values of vibrational accelerations in order to predict vibration levels and volumes of sound in reference points in living spaces.","PeriodicalId":42295,"journal":{"name":"Akustika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44143189","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 : 2019-11-01DOI: 10.36336/akustika20193488
A. Antonov, I. Matveeva, I. Shubin, I. Tsukernikov
The choice and acoustic efficiency of construction and acoustic means of noise control is determined on the basis of calculations of changes in the spatio-temporal characteristics of the pulses of sound energy emitted by the sound source. The paper proposes a combined computational model for estimating the energy characteristics of pulse noise and their spatiotemporal changes. The model describes the formation and distribution of the reflected sound energy of pulses in the mirror-scattered reflection of sound from the fences. The principles of construction of the computational model and the computer program implementing it are stated. Evaluation of the computational model is performed by comparative analysis of experimental and computational data obtained by the action of a pulsed noise source in complex geometrically shaped rooms. It is found that the calculated graphs of the decay of the reflected pulse energy in time coincide with the experimentally determined declines.
{"title":"CALCULATION OF IMPULSE NOISE WITH MIRROR-DIFUSE REFLECTION OF SOUND FROM FENCES","authors":"A. Antonov, I. Matveeva, I. Shubin, I. Tsukernikov","doi":"10.36336/akustika20193488","DOIUrl":"https://doi.org/10.36336/akustika20193488","url":null,"abstract":"The choice and acoustic efficiency of construction and acoustic means of noise control is determined on the basis of calculations of changes in the spatio-temporal characteristics of the pulses of sound energy emitted by the sound source. The paper proposes a combined computational model for estimating the energy characteristics of pulse noise and their spatiotemporal changes. The model describes the formation and distribution of the reflected sound energy of pulses in the mirror-scattered reflection of sound from the fences. The principles of construction of the computational model and the computer program implementing it are stated. Evaluation of the computational model is performed by comparative analysis of experimental and computational data obtained by the action of a pulsed noise source in complex geometrically shaped rooms. It is found that the calculated graphs of the decay of the reflected pulse energy in time coincide with the experimentally determined declines.","PeriodicalId":42295,"journal":{"name":"Akustika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43877331","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 : 2019-11-01DOI: 10.36336/akustika201934100
A. Shashurin, M. Goguadze, Anna Lubianchenko
The purpose of this study is to measure the octave sound pressure levels and vibrations of a boring machine. A theoretical analysis of the sound pressure levels near the boring machine is performed. The measurement results are given. It was found that the workplace sound pressure levels exceed the sanitary standards, which suggests that the excessive noise levels are due to the exposure to the cutter sound radiation and the axis being machined.
{"title":"EXPERIMENTAL STUDIES ON THE NOISE AND VIBRATION OF A SPECIAL BORING MACHINE DUE TO FORMATION OF THE OPERATOR´S WORKPLACE SOUND FIELD","authors":"A. Shashurin, M. Goguadze, Anna Lubianchenko","doi":"10.36336/akustika201934100","DOIUrl":"https://doi.org/10.36336/akustika201934100","url":null,"abstract":"The purpose of this study is to measure the octave sound pressure levels and vibrations of a boring machine. A theoretical analysis of the sound pressure levels near the boring machine is performed. The measurement results are given. It was found that the workplace sound pressure levels exceed the sanitary standards, which suggests that the excessive noise levels are due to the exposure to the cutter sound radiation and the axis being machined.","PeriodicalId":42295,"journal":{"name":"Akustika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49053976","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 : 2019-11-01DOI: 10.36336/akustika20193426
V. Murzinov, Yury Murzinov, Sergey Popov, Julia Tatarinova
A model of a sound reflecting surface is presented that provides the specified character of the sound field formation. According to the pre-planned nature of the sound field for a specific area, the shapes of the reflecting surfaces are modeled, made and installed in a given order. For a point sound source, the shape of the reflecting surface is calculated, which is located at a given distance from the source and ensures the formation of a parallel sound stream in a given direction.
{"title":"FORMATION OF GIVEN SOUND FIELD BY MODELING SOUND REFLECTING SURFACE","authors":"V. Murzinov, Yury Murzinov, Sergey Popov, Julia Tatarinova","doi":"10.36336/akustika20193426","DOIUrl":"https://doi.org/10.36336/akustika20193426","url":null,"abstract":"A model of a sound reflecting surface is presented that provides the specified character of the sound field formation. According to the pre-planned nature of the sound field for a specific area, the shapes of the reflecting surfaces are modeled, made and installed in a given order. For a point sound source, the shape of the reflecting surface is calculated, which is located at a given distance from the source and ensures the formation of a parallel sound stream in a given direction.","PeriodicalId":42295,"journal":{"name":"Akustika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44570552","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 : 2019-11-01DOI: 10.36336/akustika201934170
M. Kuprikov, L. Ponyaev, N. Kuprikov
The analysis of the find Optimal Structure of the Large Aircraft and Airship for decrease of Sound/Noise Pressure Level inside and outside the Cabin Saloon are very actually today for Worldwide Ecology Program. The Method of Aircraft layout from the virtual mass center is given, which allows us to obtain the Aircraft layout from the conditions of Infrastructural Constraints in the terminal configurations of the Modern Air Transportation Infrastructure and IATA/ICAO Regulation. A Method is proposed for the synthesis of new circuit solutions for an Aircraft passenger compartment and may be use to any Diridgables Projections future. A Geometrical representation of the concept of LHA with large passenger capacity made with a Drop-Shaped Fuselage in the Aerodynamic balancing Flying Wing Body Scheme is given.The new Body Plane LHA and Lighter-then-Air (LTA) Vehicles with cover of Solar Electro Systems will be more innovation projections for Worldwide Security Air Transportation with reduce Noise and CO Pollution Level.
{"title":"DECREASE OF SOUND PRESSURE LEVEL AND NOISE INSIDE HYBRID ELECTRIC WING BODY PLANES AND DIRIDGABLES","authors":"M. Kuprikov, L. Ponyaev, N. Kuprikov","doi":"10.36336/akustika201934170","DOIUrl":"https://doi.org/10.36336/akustika201934170","url":null,"abstract":"The analysis of the find Optimal Structure of the Large Aircraft and Airship for decrease of Sound/Noise Pressure Level inside and outside the Cabin Saloon are very actually today for Worldwide Ecology Program. The Method of Aircraft layout from the virtual mass center is given, which allows us to obtain the Aircraft layout from the conditions of Infrastructural Constraints in the terminal configurations of the Modern Air Transportation Infrastructure and IATA/ICAO Regulation. A Method is proposed for the synthesis of new circuit solutions for an Aircraft passenger compartment and may be use to any Diridgables Projections future. A Geometrical representation of the concept of LHA with large passenger capacity made with a Drop-Shaped Fuselage in the Aerodynamic balancing Flying Wing Body Scheme is given.The new Body Plane LHA and Lighter-then-Air (LTA) Vehicles with cover of Solar Electro Systems will be more innovation projections for Worldwide Security Air Transportation with reduce Noise and CO Pollution Level.","PeriodicalId":42295,"journal":{"name":"Akustika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43681280","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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