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International Journal of Vehicle Noise and Vibration最新文献

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Effect of car speed on the transmission of vibration through the seat pan and backrest: field study 汽车速度对振动通过座盘和靠背传递的影响:实地研究
International Journal of Vehicle Noise and Vibration Pub Date : 2019-01-01 DOI: 10.1504/ijvnv.2019.10028127
S. Grami, N. Nawayseh, Sadeque Hamdan
{"title":"Effect of car speed on the transmission of vibration through the seat pan and backrest: field study","authors":"S. Grami, N. Nawayseh, Sadeque Hamdan","doi":"10.1504/ijvnv.2019.10028127","DOIUrl":"https://doi.org/10.1504/ijvnv.2019.10028127","url":null,"abstract":"This study investigates the effect of car speed on the vibration transmitted to the passenger through both the seat pan and backrest. Ten male subjects sat in the front passenger seat of a sedan car and were driven at three different speeds (60, 80 and 100 km/h). During each ride, the vibration dose value (VDV) was measured in the x, y and z-directions on the seat pan and at the backrest. The results showed an increase in the VDV in all directions with increasing the car speed. The VDVs at the backrest were found as high as, or even higher than, those measured on the seat depending on the speed and the measurement axis. Hence, it is recommended that vibration in road vehicles be assessed using more than one speed while taking into consideration measurement at the backrest.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66688700","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
Simulation of a multi-cylinder engine vibrational behaviour 多缸发动机振动特性的仿真
International Journal of Vehicle Noise and Vibration Pub Date : 2018-10-09 DOI: 10.1504/IJVNV.2018.095158
D. Siano, R. Citarella, E. Armentani
{"title":"Simulation of a multi-cylinder engine vibrational behaviour","authors":"D. Siano, R. Citarella, E. Armentani","doi":"10.1504/IJVNV.2018.095158","DOIUrl":"https://doi.org/10.1504/IJVNV.2018.095158","url":null,"abstract":"This work analyses the vibrational behaviour of an in-line 4-cylinder, 4-stroke, internal combustion turbocharged direct injection gasoline engine. A multi-body numerical model of the engine is implemented, to simulate its dynamic response when running in a bench test. The cranktrain multi-body model is created using geometrical data extracted from engine CAD, using as excitation forces the experimentally measured in-cylinder pressure values. A flexible multi-body approach leverages on FEM modelling of crankshaft, cylinder block and head for the dynamic analysis, with remaining parts modelled as rigid. The engine mounts are modelled by flexible elements with given stiffness and damping. The importance of the explicit modelling of the rods connecting the engine with mounts is highlighted. The software Siemens-LMS Virtual Lab and ANSYS are used for the assessment.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"14 1","pages":"101"},"PeriodicalIF":0.0,"publicationDate":"2018-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJVNV.2018.095158","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49414542","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: 5
Horn effect of tyre/road noise: modelling and experiments of acoustic network resonators in horn-like structures 轮胎/道路噪声的喇叭效应:喇叭状结构声网络谐振器的建模与实验
International Journal of Vehicle Noise and Vibration Pub Date : 2018-10-09 DOI: 10.1504/IJVNV.2018.095183
Bin Wang, D. Duhamel
{"title":"Horn effect of tyre/road noise: modelling and experiments of acoustic network resonators in horn-like structures","authors":"Bin Wang, D. Duhamel","doi":"10.1504/IJVNV.2018.095183","DOIUrl":"https://doi.org/10.1504/IJVNV.2018.095183","url":null,"abstract":"The noise generated in the contact zone can be amplified by the horns made by the surfaces of the tyre and the road. Previous researches on the horn effect have only investigated smooth tyres and roads. In this work we take into account the tyre treads in the calculation of the horn effect. The air resonances and horn effects are studied in the same model. A model of flanged networks is established for the tyre/road system, and multi-domain coupling methods are developed for the calculation of the acoustic fields around the flanged networks. With this model the reductions of the amplifications of the horn effect by the networks can be estimated. The models of the flanged networks are also proved to be effective by the experiments. Wooden pipes between a wooden cylinder and a sheet of plywood are built for the validation. A real tyre on a sheet of plywood is also measured and calculated with the proposed methods.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"14 1","pages":"191-217"},"PeriodicalIF":0.0,"publicationDate":"2018-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJVNV.2018.095183","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44803663","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: 2
Identification and analysis of the noise sources of an engine settled in a car using array-based techniques 基于阵列技术的汽车发动机噪声源识别与分析
International Journal of Vehicle Noise and Vibration Pub Date : 2018-10-09 DOI: 10.1504/IJVNV.2018.10016438
José A. Ballesteros, M. Fernandez, E. Sarradj, Ma Jesús Ballesteros
{"title":"Identification and analysis of the noise sources of an engine settled in a car using array-based techniques","authors":"José A. Ballesteros, M. Fernandez, E. Sarradj, Ma Jesús Ballesteros","doi":"10.1504/IJVNV.2018.10016438","DOIUrl":"https://doi.org/10.1504/IJVNV.2018.10016438","url":null,"abstract":"Engine noise is one of the most important noise sources in a car. This noise is radiated to both the inside and the outside of the car. In this paper, the accuracy of the array based techniques has been compared with the one of sound intensity measurements. Then, the engine noise of a car has been measured at different rotational speeds through array based techniques. At low frequencies, statistically optimised near-field acoustical holography (SONAH) allows an accurate identification of the noise sources. At medium and high frequencies, different beamforming algorithms are compared, choosing orthogonal beamforming because of its better behaviour regarding the influence of the sidelobes and the best resolution and identification of the noise sources. The noise source maps obtained using array based techniques allow to locate in an accurate way the noise sources in the engine settled in a car when it is working at different rotational speeds, performing an efficient analysis of details of a possible noise problem. The noise sources identified are: the engine, the timing belt, the air intake system, the diesel pump and the cylinders and the crank system; all of them were afterwards analysed in detail through their noise spectra.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"14 1","pages":"171"},"PeriodicalIF":0.0,"publicationDate":"2018-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45778781","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: 4
Torsional vibration moment analysis of a three-cylinder internal combustion engine 三缸内燃机扭转振动力矩分析
International Journal of Vehicle Noise and Vibration Pub Date : 2018-10-09 DOI: 10.1504/IJVNV.2018.10016437
Halit Karabulut, Duygu Ipci
{"title":"Torsional vibration moment analysis of a three-cylinder internal combustion engine","authors":"Halit Karabulut, Duygu Ipci","doi":"10.1504/IJVNV.2018.10016437","DOIUrl":"https://doi.org/10.1504/IJVNV.2018.10016437","url":null,"abstract":"In this study, a combined dynamic and thermodynamic model of a three-cylinder diesel engine has been developed and moments causing torsional vibration of the engine body have been estimated. The model involves motion equations of pistons, connecting rods and crankshaft as well as thermodynamic relations. The heat generation required for the thermodynamic cycle was provided by an algebraic equation established via the Gaussian function. The heat equation was optimised so as to avoid diesel knocking and formation of harmful emissions. The minimisations of pitch and yaw moments were examined via adding counterweights onto the crankshaft. The yaw moment was found to be totally eliminable but the pitch moment was not. According to a coordinate system whose origin is at the mass centre of the engine and its z axis is co-directional with cylinder axes, the flexible mounting elements of the engine were found to be able to set at somewhere on x and y axes.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"14 1","pages":"147"},"PeriodicalIF":0.0,"publicationDate":"2018-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49442938","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
The effects of the electro-mechanical coupling and Halbach magnet pattern on energy harvesting performance of a two degree of freedom electromagnetic vibration energy harvester 研究了机电耦合和哈尔巴赫磁体模式对二自由度电磁振动能量采集器能量收集性能的影响
International Journal of Vehicle Noise and Vibration Pub Date : 2018-10-09 DOI: 10.1504/IJVNV.2018.10016435
Ran Zhang, Xu Wang, Hongli Shu, S. John
{"title":"The effects of the electro-mechanical coupling and Halbach magnet pattern on energy harvesting performance of a two degree of freedom electromagnetic vibration energy harvester","authors":"Ran Zhang, Xu Wang, Hongli Shu, S. John","doi":"10.1504/IJVNV.2018.10016435","DOIUrl":"https://doi.org/10.1504/IJVNV.2018.10016435","url":null,"abstract":"This paper studies a two degree of freedom electromagnetic vibration energy harvesting system with a magnet arrangement of the Halbach array. A theoretical analysis and computational simulation of the system were established through frequency response analysis and time domain integration of the system motion equations using the Matlab Simulink software. The results of the theoretical analysis and simulation models were compared with the results of a series of experiments, verifying the analysis approach.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"14 1","pages":"124-146"},"PeriodicalIF":0.0,"publicationDate":"2018-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43232311","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: 4
Wind noise from A-pillar and side view mirror of a realistic generic car model, DriAver 风的噪音从a柱和侧视镜的现实通用汽车模型，司机
International Journal of Vehicle Noise and Vibration Pub Date : 2018-07-09 DOI: 10.1504/IJVNV.2018.10014188
Mohamed Sukri Mat Ali, J. Jalasabri, A. M. Sood, S. Mansor, Haziqah Shaharuddin, Sallehuddin Muhamad
{"title":"Wind noise from A-pillar and side view mirror of a realistic generic car model, DriAver","authors":"Mohamed Sukri Mat Ali, J. Jalasabri, A. M. Sood, S. Mansor, Haziqah Shaharuddin, Sallehuddin Muhamad","doi":"10.1504/IJVNV.2018.10014188","DOIUrl":"https://doi.org/10.1504/IJVNV.2018.10014188","url":null,"abstract":"Interior noise of a production car is a total contribution mainly from engine, tyres and aerodynamics. At high speed, wind noise can dominate the total interior noise. Wind noise is associated with the unsteadiness of the flow. For most production cars, A-pillar and side view mirror are the regions where the highly separated and turbulent flows are observed. This study quantifies the wind noise contribution from A-pillar and side view mirror with respect to the interior noise of a generic realistic model, DrivAer. The noise sources are obtained numerically from the flow-structure interactions based on the unsteady Reynolds averaged Navier stokes (URANS) while the noise propagation is estimated using Curle's equation of Lighthill acoustic analogy. The sound pressure frequency spectrum of the interior noise is obtained by considering the sound transmission loss from the side glass by using the mass law for transmission loss. The study found that the noise from the A-pillar is higher than the noise from the side view mirror in the whole frequency range. Near the end of the A-pillar component contributes the highest radiated noise level with up to 20 dB louder than that at the front part of the A-pillar.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"14 1","pages":"38"},"PeriodicalIF":0.0,"publicationDate":"2018-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46169673","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: 4
Comparison of different tyre models for tyre/road noise applications 不同轮胎型号的轮胎/道路噪音应用比较
International Journal of Vehicle Noise and Vibration Pub Date : 2018-07-09 DOI: 10.1504/IJVNV.2018.093105
L. Pahlevani, D. Duhamel, G. Cumunel, H. Yin
{"title":"Comparison of different tyre models for tyre/road noise applications","authors":"L. Pahlevani, D. Duhamel, G. Cumunel, H. Yin","doi":"10.1504/IJVNV.2018.093105","DOIUrl":"https://doi.org/10.1504/IJVNV.2018.093105","url":null,"abstract":"In terms of safety and environment, the reduction of noise generated by tire vibrations on roads has a significant importance. In order to study the vibration properties of a tire, various models have been presented in the literature. The main purpose of the current study is a brief review of the characteristics of some models. It is supposed that the tire is subjected to an excitation caused by the contact between the tire and the road. Subsequently, the dynamic behaviour of these models are studied and compared with each other. The effects of inflation pressure and the tread patterns on the dynamic behaviour of the mentioned models are examined. For verification, the dynamical behaviour of the tire is studied experimentally. Application of the present study can be contemplated in the prediction of rolling noise and rolling resistance.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"14 1","pages":"16"},"PeriodicalIF":0.0,"publicationDate":"2018-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJVNV.2018.093105","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41951228","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
Genetic and random search algorithms for optimising vehicle interior noise and vibration 优化车辆内部噪声和振动的遗传和随机搜索算法
International Journal of Vehicle Noise and Vibration Pub Date : 2018-07-09 DOI: 10.1504/IJVNV.2018.10014169
Adel Mohammed Al-Dhahebi, A. K. Junoh, W. Muhamad
{"title":"Genetic and random search algorithms for optimising vehicle interior noise and vibration","authors":"Adel Mohammed Al-Dhahebi, A. K. Junoh, W. Muhamad","doi":"10.1504/IJVNV.2018.10014169","DOIUrl":"https://doi.org/10.1504/IJVNV.2018.10014169","url":null,"abstract":"The goal of this paper is to optimise the vehicle noise and vibration using genetic and random search algorithms (RSAs) approach. Toward this end, an experimental design was carried out to acquire the noise and vibration data using three local compact cars namely Viva, Myvi and Axia on stationary and running conditions with a variety of engine speeds transmissions. The measured noise and vibration were analysed to obtain the sound quality parameters loudness and sharpness, sound pressure level and vibration exposures in the interior vehicle cabin. Overall findings of this study indicate that the comfort level is factually influenced by factors including type of road surface, engine transmissions and vehicle design characteristics. The results also indicate that the proposed approach is reliable and can be utilised by automotive researchers to identify the optimal NVH values necessary for vehicle refinement and noise control.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"14 1","pages":"84"},"PeriodicalIF":0.0,"publicationDate":"2018-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45653750","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
Further proof for the theory of elastic sound absorption about flexible porous materials 进一步证明了柔性多孔材料的弹性吸声理论
International Journal of Vehicle Noise and Vibration Pub Date : 2018-07-09 DOI: 10.1504/IJVNV.2018.10014189
Ren Yong-hua, Feng Fei-long, Ma Bao-ke
{"title":"Further proof for the theory of elastic sound absorption about flexible porous materials","authors":"Ren Yong-hua, Feng Fei-long, Ma Bao-ke","doi":"10.1504/IJVNV.2018.10014189","DOIUrl":"https://doi.org/10.1504/IJVNV.2018.10014189","url":null,"abstract":"A new theory about porous materials has evolved in recent years, and it differs from traditional theories to a large extent. In this paper, by referring to documents to test the new theory experimentally and theoretically, we make analysis of the relationship between thickness of porous materials and the frequency of incident sound wave, so as to further discuss about the new theory. Results prove that the new sound absorption theory is of great significance in the sound absorption mechanism of porous material and very useful in practical application.","PeriodicalId":34979,"journal":{"name":"International Journal of Vehicle Noise and Vibration","volume":"14 1","pages":"62"},"PeriodicalIF":0.0,"publicationDate":"2018-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48013038","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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