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International Journal of Vehicle Noise and Vibration最新文献

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A review of porous automotive sound absorbers, their environmental impact and the factors that influence sound absorption 综述了多孔汽车吸声材料及其对环境的影响和影响吸声的因素
International Journal of Vehicle Noise and Vibration Pub Date : 2017-11-09 DOI: 10.1504/IJVNV.2017.10008787
R. Dunne, D. Desai, R. Sadiku
{"title":"A review of porous automotive sound absorbers, their environmental impact and the factors that influence sound absorption","authors":"R. Dunne, D. Desai, R. Sadiku","doi":"10.1504/IJVNV.2017.10008787","DOIUrl":"https://doi.org/10.1504/IJVNV.2017.10008787","url":null,"abstract":"The transport sector accounts for ~25% of worldwide carbon dioxide emissions, where cars and trucks account for the bulk of this. The need for lighter and more efficient vehicles is becoming ever more crucial in light of the current trend in the depletion of petroleum reserves and the increasing effects of global warming. The effect that noise has on vehicle occupants is a growing concern as studies reveal the harmful effects that noise has on the human body. Hence, the automotive industry is under immense pressure to produce automobiles that are more environmentally-friendly. By acquiring available knowledge on the properties of porous sound absorbing materials and understanding the factors that influence sound absorption, designers can reduce vehicle weight and increase passive sound absorption and hence, reduce carbon dioxide emissions and improve vehicle cabin noise levels.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"13 1","pages":"137"},"PeriodicalIF":0.0,"publicationDate":"2017-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48555260","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}
引用次数: 3
Influence of the symmetric structure of a wheel hub drive on the vibro-acoustic behaviour of electric vehicles due to magnetic forces 磁力作用下轮毂传动对称结构对电动汽车振动声特性的影响
International Journal of Vehicle Noise and Vibration Pub Date : 2017-11-09 DOI: 10.1504/IJVNV.2017.10008788
Dominik Stretz, Dominik Nees, F. Gauterin, J. Kolb, M. Kurch
{"title":"Influence of the symmetric structure of a wheel hub drive on the vibro-acoustic behaviour of electric vehicles due to magnetic forces","authors":"Dominik Stretz, Dominik Nees, F. Gauterin, J. Kolb, M. Kurch","doi":"10.1504/IJVNV.2017.10008788","DOIUrl":"https://doi.org/10.1504/IJVNV.2017.10008788","url":null,"abstract":"Magnetic forces in electrical machines cause vibrations on the structure and its connected components. This leads to undesired noise and vibration in the total system. This paper deals with explanation and reduction of alternating force generation at the connection point of a motor due to radial forces acting on the stator teeth with an electric wheel hub drive being used as example. These alternating forces have a disturbing effect on the driver in the form of noise or vibrations. In our research, we developed a multi-physical simulation of the system which is compared with an operational vibration analysis from an experiment. The simulation shows that the main cause is the axially asymmetric structure of the housing. We reduced the alternating forces at the connection point by using an axially symmetric structure. An axially symmetric design also of other electric machines is to be expected to significantly improve the vibro-acoustic behaviour.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"13 1","pages":"164"},"PeriodicalIF":0.0,"publicationDate":"2017-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42724502","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}
引用次数: 1
Improved DCT domain variable step-size Griffith's LMS algorithm based active noise control using observation noise cancellers for secondary path identification 基于改进的DCT域变步长Griffith LMS算法的主动噪声控制，利用观测噪声消去器进行二次路径识别
International Journal of Vehicle Noise and Vibration Pub Date : 2017-11-09 DOI: 10.1504/IJVNV.2017.10008786
S. Roopa, S. Narasimhan
{"title":"Improved DCT domain variable step-size Griffith's LMS algorithm based active noise control using observation noise cancellers for secondary path identification","authors":"S. Roopa, S. Narasimhan","doi":"10.1504/IJVNV.2017.10008786","DOIUrl":"https://doi.org/10.1504/IJVNV.2017.10008786","url":null,"abstract":"This paper proposes two improved DCT domain active noise control (ANC) systems using observation noise cancellers (NC) for the secondary path identification (SPI). This is achieved by identifying the main path by an adaptive filter which is based on input orthogonalisation by a DCT. Further for the proposed first ANC system, the available input orthogonal components are beneficially used in estimating the observation noise component required for the adaptive NC for the SPI. For the proposed second ANC system, the NC is based on an observation noise robust discrete cosine transform domain variable step-size Griffiths LMS (TVGLMS) algorithm. In both ANC systems, the NC enables improved SPI and this indirectly enables an improved ANC convergence performance. The second ANC system uses a noise robust variable step-size and gradient for its NC used in deriving the desired signal for SPI of an ANC system with TVGLMS noise canceller. The smoothed ensemble average square error (SEASE) is reduced by an additional 5 dB and its convergence rate is about 1.5 times faster over that of an ANC which uses only orthogonal components of its input. The performance of basic first ANC which uses input orthogonalisation only for its main path identification is very poor as its noise reduction is only -2.5 dB.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"13 1","pages":"118"},"PeriodicalIF":0.0,"publicationDate":"2017-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46655510","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}
引用次数: 0
Assessing acoustic emission in 1055I John Deere combine harvester using statistical and artificial intelligence methods 利用统计和人工智能方法评估约翰迪尔1055I联合收割机的声发射
International Journal of Vehicle Noise and Vibration Pub Date : 2017-11-09 DOI: 10.1504/IJVNV.2017.10008785
A. Jahanbakhshi, Bahram Ghamari, K. Heidarbeigi
{"title":"Assessing acoustic emission in 1055I John Deere combine harvester using statistical and artificial intelligence methods","authors":"A. Jahanbakhshi, Bahram Ghamari, K. Heidarbeigi","doi":"10.1504/IJVNV.2017.10008785","DOIUrl":"https://doi.org/10.1504/IJVNV.2017.10008785","url":null,"abstract":"Agricultural mechanisation is accompanied by several challenges, one of them is the noise pollution caused by machinery. Noise pollution has undesirable effects on humans such as temporary or permanent loss of hearing, decrease in working efficiency and increase in accidents. The aim of this study is to assess noise pollution in the 1055I John Deere combine harvester. The tests were performed at different engine speeds, gear positions and sound measuring locations. The obtained data were analysed in the form of factorial test based on a completely randomised design. An artificial neural network model was created to predict the sound level in the combine. The results of variance analysis for the effects of the main factors on the level of sound were significant at probability level of 1%. The sound intensity reaching the driver's ear based on frequency analysis is equal to 84.16 dB at the frequency of 4000 Hz. The mean square error and the correlation coefficient for the best neural network with ten neurons in the hidden layer were obtained. The permitted time duration of driving the harvester was calculated to be less than 2 h.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"13 1","pages":"105"},"PeriodicalIF":0.0,"publicationDate":"2017-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47897056","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}
引用次数: 16
Decoupling tyre and suspension via frequency based substructuring 基于频率的子结构实现轮胎与悬架的解耦
International Journal of Vehicle Noise and Vibration Pub Date : 2017-11-09 DOI: 10.1504/IJVNV.2017.10008784
Matthew Clontz, S. Taheri
{"title":"Decoupling tyre and suspension via frequency based substructuring","authors":"Matthew Clontz, S. Taheri","doi":"10.1504/IJVNV.2017.10008784","DOIUrl":"https://doi.org/10.1504/IJVNV.2017.10008784","url":null,"abstract":"Noise and vibrations transmitted through the tyre then, subsequently, the suspension has a major impact on the overall ride quality in a passenger vehicle. Much work has been done in the past to evaluate ride comfort subjectively, but recent years have seen a marked increase in the development of objective/analytical methods. The following paper presents a method to mathematically separate the vibrational properties of the tyre and the suspension in order to further understand the mechanism of vibration transmission between the two. Frequency based substructuring (FBS) techniques will be used to decouple the tyre subsystem from the suspension subsystem. In this work, these FBS techniques are applied first to decouple the equations of motion of a simple quarter car system as a proof of concept. Then, a more generalised approach is taken which will be applicable to experimental data.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"13 1","pages":"87"},"PeriodicalIF":0.0,"publicationDate":"2017-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45458254","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}
引用次数: 0
Design and characterisation of external orifice semi-active suspension system for armoured vehicle application 装甲车辆外孔半主动悬架系统的设计与特性
International Journal of Vehicle Noise and Vibration Pub Date : 2017-08-25 DOI: 10.1504/IJVNV.2017.10006956
M. Amin, K. Hudha, Z. A. Kadir, N. H. Amer
{"title":"Design and characterisation of external orifice semi-active suspension system for armoured vehicle application","authors":"M. Amin, K. Hudha, Z. A. Kadir, N. H. Amer","doi":"10.1504/IJVNV.2017.10006956","DOIUrl":"https://doi.org/10.1504/IJVNV.2017.10006956","url":null,"abstract":"The objective of this paper is to investigate the force-velocity characteristics of a new design of external orifice semi-active suspension system (EOSASS). EOSASS is a class of semi-active system where the orifice area is controlled electronically using an electric motor. The idea of EOSASS is to modify the internal fixed orifice of the existing passive damper into externally controllable using hydraulic unit. The behaviour of the EOSASS is tested in terms of its force-velocity and force-displacement characteristics using Instron 8801 Servohydraulic fatigue testing system and WaveMatrix dynamic testing software. The ratio of the orifice opening area for the compression and extension on the hydraulic unit is varied in order to study the hysteresis behaviour of the damper. From the experimental results, the relationship between the damping force and the ratio of orifice opening during extension and compression are obtained. It was verified that decreasing the ratio of orifice opening will produce higher damping force in both compression and extension stages.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"13 1","pages":"73"},"PeriodicalIF":0.0,"publicationDate":"2017-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41865058","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}
引用次数: 1
High frequency model describing the noise transfer behaviour of automotive hydraulic engine mounts 描述汽车液压发动机悬置噪声传递特性的高频模型
International Journal of Vehicle Noise and Vibration Pub Date : 2017-08-25 DOI: 10.1504/IJVNV.2017.10006942
S. Watzl, F. Gauterin, B. Pfaefflin
{"title":"High frequency model describing the noise transfer behaviour of automotive hydraulic engine mounts","authors":"S. Watzl, F. Gauterin, B. Pfaefflin","doi":"10.1504/IJVNV.2017.10006942","DOIUrl":"https://doi.org/10.1504/IJVNV.2017.10006942","url":null,"abstract":"To further decrease carbon dioxide emissions, efficiency of combustion engines in passenger cars needs to increase. Measures enhancing efficiency in combustion engines significantly increase engine vibrations. In order to provide a high level of comfort and low interior noise levels, isolation properties of engine mount systems have to compensate these increasing excitations. As existing analogous models of hydraulic mounts describe their behaviour only at low frequencies, we elaborate a model describing the isolation properties in a frequency range relevant for dominant engine orders. We deduce this model from parameter variation tests on hydraulic engine mounts using an electrodynamic test bench for characterisation. The parameters in the proposed model represent geometric properties as well as physical properties of springs, masses and dampening effects. Using the elaborated model helps to tune the parameters of engine mounts to the specific demands of different vehicles and to increase isolation properties.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"13 1","pages":"38"},"PeriodicalIF":0.0,"publicationDate":"2017-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42863338","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}
引用次数: 0
Control and vibration of rail vehicle semi-active suspensions with comfort evaluation 具有舒适性评价的轨道车辆半主动悬架的控制与振动
International Journal of Vehicle Noise and Vibration Pub Date : 2017-08-25 DOI: 10.1504/IJVNV.2017.10006946
M. Graa, M. Nejlaoui, Z. Affi, A. Houidi, L. Romdhane
{"title":"Control and vibration of rail vehicle semi-active suspensions with comfort evaluation","authors":"M. Graa, M. Nejlaoui, Z. Affi, A. Houidi, L. Romdhane","doi":"10.1504/IJVNV.2017.10006946","DOIUrl":"https://doi.org/10.1504/IJVNV.2017.10006946","url":null,"abstract":"This paper deals with the modelling and control of rail vehicle semi-active suspensions. The analytical models of the quarter rail vehicle with a passenger seat, describing the vertical motion, are presented for semi-active and passive suspensions. Two controllers, i.e., PID-ZN and LQR are designed in order to improve the passenger comfort. This comfort is evaluated in terms of the passenger displacement and vibration. These comfort criteria are evaluated as a response of a rail imperfection excitation. The obtained results prove that the semi-active suspension with a LQR controller yields the best results compared to PID controller.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"13 1","pages":"52"},"PeriodicalIF":0.0,"publicationDate":"2017-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44362711","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}
引用次数: 0
Lumbar and seat cushions reduce whole-body vibration exposures in car driving 腰部和座垫可减少汽车驾驶过程中的全身振动
International Journal of Vehicle Noise and Vibration Pub Date : 2017-08-25 DOI: 10.1504/IJVNV.2017.10006941
Yassierli, Benny Nylson, I. Z. Sutalaksana
{"title":"Lumbar and seat cushions reduce whole-body vibration exposures in car driving","authors":"Yassierli, Benny Nylson, I. Z. Sutalaksana","doi":"10.1504/IJVNV.2017.10006941","DOIUrl":"https://doi.org/10.1504/IJVNV.2017.10006941","url":null,"abstract":"Whole-body vibration (WBV) has been associated with risk factors of low back pain among exposed drivers. The present study examined the efficacy of the use of lumbar cushion and seat cushion in reducing exposure to WBV. A total of 24 male participants completed 24 experimental sessions, a combination of two levels of rotational amplitude, three levels of rotational frequency and four levels of seating conditions. In each session, they were exposed to a five-minute vibration stimulus. The main and interaction effects of rotational amplitude, rotational frequency, and seating condition were significant (p < 0.01). The use of lumbar cushion and seat cushion reduced WBV exposure up to 12%, and the decline was more substantial at higher rotational frequency (i.e., higher speed) and higher rotational amplitude (i.e., rougher road condition). Lumbar and seat cushions can be used to improve driving health aspect in occupational setting.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"13 1","pages":"26"},"PeriodicalIF":0.0,"publicationDate":"2017-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46004119","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}
引用次数: 0
Analysis on hydraulic parameters of interconnected suspension based on fuzzy grey correlation 基于模糊灰色关联的互联悬架液压参数分析
International Journal of Vehicle Noise and Vibration Pub Date : 2017-08-25 DOI: 10.1504/IJVNV.2017.10006929
C. Ren, Kai Li
{"title":"Analysis on hydraulic parameters of interconnected suspension based on fuzzy grey correlation","authors":"C. Ren, Kai Li","doi":"10.1504/IJVNV.2017.10006929","DOIUrl":"https://doi.org/10.1504/IJVNV.2017.10006929","url":null,"abstract":"In this paper, a 4 DOF hydraulically interconnected suspension roll frequency domain model is set up. The frequency response functions and a road surface model are set up to achieve responses such as vertical acceleration power spectral density and roll acceleration power spectral density. For the problem of the effect of hydraulic parameters on the hydraulically interconnected suspension response, a sensitivity analysis method based on fuzzy grey correlation is used and the influence degree of hydraulic parameters to vertical response and roll response is determined. The obtained results indicate that the valve connected to hydraulic chamber has a large impact on vertical vibration modal; accumulator and the valves connected to it make a large impact on roll vibration modal. This paper provides a theoretical basis for the selection of design variables in the optimisation of the suspension.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"13 1","pages":"1"},"PeriodicalIF":0.0,"publicationDate":"2017-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42905080","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}
引用次数: 0
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