微商车的垂直振动不舒适度模型和实验研究
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摘要
微商车因为突出的装载能力在国内中小城市和乡镇地区非常受欢迎。随着人们对车辆乘坐舒适性要求的提高,有必要研究微商车行驶时车内振动产生的不舒适度,建立振动不舒适度的预测模型,有助于更好地对车辆的振动控制进行指导。针对中小城市和乡镇地区较为复杂的路况,研究微商车在沥青、水泥、砂石和颠簸四种路面行驶时车内垂直振动加速度和人体不舒适度值之间的关系。每个路况下选取6个振动样本,振动加速度采用Wb计权,范围为0.531 m/s2～2.991 m/s2,总共24个振动样本。30位评价人员采用绝对幅值评价法给出每个振动样本作用下的不舒适值。采用线性回归方法分析加速度和振动不舒适度的关系,建立了微商车在不同路况下行驶时车内垂直振动产生的不舒适度预测模型。
Micro commercial vehicles are very popular in the developing areas of China for its extraordinary loading ability. With the increasing demands for improving the riding comfort of vehicles, it is necessary to investigate the vibration induced discomfort of the micro commercial vehicles to provide a guidance of the vibration control of the vehicles. In this paper, a prediction model for discomfort analysis of the vehicles is established. Considering the complexity of road conditions in the developing areas, the vibration induced discomfort of the micro commercial vehicle when it is running on the asphalt road, concrete road, gravel road and bump road is investigated. Six vibration stimuli with the Wb weighted acceleration ranged from 0.531 m/s2 to 2.991 m/s2 are applied for each road condition, so there are totally 24 vibration stimuli. Thirty subjects evaluate the vibration induced discomfort with absolute magnitude estimation method. The relationship between the discomfort and the vibration acceleration is established by linear regression analysis. The prediction model of the vertical vibration induced discomfort of the micro commercial vehicles is established.
Micro commercial vehicles are very popular in the developing areas of China for its extraordinary loading ability. With the increasing demands for improving the riding comfort of vehicles, it is necessary to investigate the vibration induced discomfort of the micro commercial vehicles to provide a guidance of the vibration control of the vehicles. In this paper, a prediction model for discomfort analysis of the vehicles is established. Considering the complexity of road conditions in the developing areas, the vibration induced discomfort of the micro commercial vehicle when it is running on the asphalt road, concrete road, gravel road and bump road is investigated. Six vibration stimuli with the Wb weighted acceleration ranged from 0.531 m/s2 to 2.991 m/s2 are applied for each road condition, so there are totally 24 vibration stimuli. Thirty subjects evaluate the vibration induced discomfort with absolute magnitude estimation method. The relationship between the discomfort and the vibration acceleration is established by linear regression analysis. The prediction model of the vertical vibration induced discomfort of the micro commercial vehicles is established.
引文
[1] SHOENBERGER R W, C S HARRIS. Psychophysical Assessment of Whole-Body Vibration[J]. Human Factors:The Journal of Human Factors and Ergonomics Society, 1971. 13(1):41-50.
[2] HOWARTH H VC, M J GRIFFIN. The frequency dependence of subjective reaction to vertical and horizontal whole‐body vibration at low magnitudes[J].The Journal of the Acoustical Society of America, 1988.83(4):1406-1413.
[3] MORIOKA M, M J GRIFFIN. Magnitude-dependence of equivalent comfort contours for fore-and-aft, lateral and vertical whole-body vibration[J]. Journal of Sound and Vibration, 2006. 298(3):p. 755-772.
[4] MORIOKA M, M J GRIFFIN. Thresholds for the perception of fore‐and‐aft, lateral and vertical vibration by seated persons[J]. The Journal of the Acoustical Society of America, 2008. 123(5):3667.
[5] SUBASHI G H M. Nonlinear subjective and dynamic responses of seated subjects exposed to horizontal wholebody vibration[J]. Journal of Sound and Vibration,2009. 321(1-2):p. 416-434.
[6] ZHOU Z, M J GRIFFIN. Response of the seated human body to whole-body vertical vibration:discomfort caused by sinusoidal vibration[J]. Ergonomics, 2014. 57(5):714-732.
[7] DONG R G. Frequency weighting derived from power absorption of fingers-hand-arm system under z(h)-axis vibration[J]. Journal of Biomechanics, 2006. 39(12):2311-2324.
[8] THUONG O, M J GRIFFIN. The vibration discomfort of standing persons:evaluation of random and transient motions[J]. Ergonomics, 2011. 54(12):1228-1239.
[9] ZHOU Z, M J GRIFFIN. Response of the seated human body to whole-body vertical vibration:discomfort caused by mechanical shocks[J]. Ergonomics, 2016:1-11.
[10] SAMMONDS G M, M FRAY, N J MANSFIELD. Effect of long term driving on driver discomfort and its relationship with seat fidgets and movements(SFMs)[J].Applied Ergonomics, 2017. 58:119-127.
[11] ITTIANUWAT R M, FARD K KATO. Evaluation of seatback vibration based on ISO 2631-1(1997)standard method:The influence of vehicle seat structural resonance[J]. Ergonomics, 2017. 60(1):82-92.
[12] CANKAYA S A, KOYUNCU M BALABAN. Steering wheel idle vibration improvement on tractor[J]. Sigma Journal of Engineering and Natural Sciences-Sigma Muhendislik Ve Fen Bilimleri Dergisi, 2016. 34(1):91-103.
[13] Lerspalungsanti S. Human ride comfort prediction of drive train using modeling method based on artificial neural networks[J]. International Journal of Automotive Technology, 2015. 16(1):153-166.
[14]谢伟平,洪文林,和李霆.某体育馆楼板振动舒适度研究[J].噪声与振动控制,2010,30(2):80-83.
[15] ISO. 2631-1:1997 Mechanical vibration and shock evaluation of human exposure to whole-body vibration[S].
[2] HOWARTH H VC, M J GRIFFIN. The frequency dependence of subjective reaction to vertical and horizontal whole‐body vibration at low magnitudes[J].The Journal of the Acoustical Society of America, 1988.83(4):1406-1413.
[3] MORIOKA M, M J GRIFFIN. Magnitude-dependence of equivalent comfort contours for fore-and-aft, lateral and vertical whole-body vibration[J]. Journal of Sound and Vibration, 2006. 298(3):p. 755-772.
[4] MORIOKA M, M J GRIFFIN. Thresholds for the perception of fore‐and‐aft, lateral and vertical vibration by seated persons[J]. The Journal of the Acoustical Society of America, 2008. 123(5):3667.
[5] SUBASHI G H M. Nonlinear subjective and dynamic responses of seated subjects exposed to horizontal wholebody vibration[J]. Journal of Sound and Vibration,2009. 321(1-2):p. 416-434.
[6] ZHOU Z, M J GRIFFIN. Response of the seated human body to whole-body vertical vibration:discomfort caused by sinusoidal vibration[J]. Ergonomics, 2014. 57(5):714-732.
[7] DONG R G. Frequency weighting derived from power absorption of fingers-hand-arm system under z(h)-axis vibration[J]. Journal of Biomechanics, 2006. 39(12):2311-2324.
[8] THUONG O, M J GRIFFIN. The vibration discomfort of standing persons:evaluation of random and transient motions[J]. Ergonomics, 2011. 54(12):1228-1239.
[9] ZHOU Z, M J GRIFFIN. Response of the seated human body to whole-body vertical vibration:discomfort caused by mechanical shocks[J]. Ergonomics, 2016:1-11.
[10] SAMMONDS G M, M FRAY, N J MANSFIELD. Effect of long term driving on driver discomfort and its relationship with seat fidgets and movements(SFMs)[J].Applied Ergonomics, 2017. 58:119-127.
[11] ITTIANUWAT R M, FARD K KATO. Evaluation of seatback vibration based on ISO 2631-1(1997)standard method:The influence of vehicle seat structural resonance[J]. Ergonomics, 2017. 60(1):82-92.
[12] CANKAYA S A, KOYUNCU M BALABAN. Steering wheel idle vibration improvement on tractor[J]. Sigma Journal of Engineering and Natural Sciences-Sigma Muhendislik Ve Fen Bilimleri Dergisi, 2016. 34(1):91-103.
[13] Lerspalungsanti S. Human ride comfort prediction of drive train using modeling method based on artificial neural networks[J]. International Journal of Automotive Technology, 2015. 16(1):153-166.
[14]谢伟平,洪文林,和李霆.某体育馆楼板振动舒适度研究[J].噪声与振动控制,2010,30(2):80-83.
[15] ISO. 2631-1:1997 Mechanical vibration and shock evaluation of human exposure to whole-body vibration[S].