东南大学学报（英文版）2020，Vol.36Issue(3)：278-284,7.DOI:10.3969/j.issn.1003-7985.2020.03.005
基于振动压路机驾驶室液压气隔振的低频率平顺性
Low-frequency ride comfort of vibratory rollers equipped with cab hydro-pneumatic mounts
摘要
Abstract
Based on the advantages of hydraulic and pneumatic mounts,a new hydro-pneumatic mount (HPM) is proposed to improve the low-frequency ride comfort of vibration rollers.Through the experiment of the vibratory roller,a nonlinear vehicle dynamic model working on off-road soil grounds is then established to assess the HPM's ride comfort in the lowfrequency region.Two indices,the power spectral density (PSD) acceleration and root mean square (RMS) acceleration of the operator vibration and cab shaking,are chosen as objective functions in both the frequency and time regions.The research results show that when the cab isolations are equipped with the HPM,the RMS values of the operator's seat,cab's pitch and roll angles are reduced by 35％,42％ and 53％;and the maximum PSD of the operator's seat,cab's pitch and roll angles are decreased by 39％,59％ and 65％,respectively.Consequently,the characteristics of the nonlinear damper and high-static stiffness of HPM can greatly reduce the operator vibration and cab shaking in the low-frequency region when compared to the vibratory roller's cab using the rubber mounts.关键词
振动压路机/平顺性/液压气隔振系统/低频率振动Key words
vibratory roller/quality ride/hydro-pneumatic mount/low-frequency vibrations分类
交通工程引用本文复制引用
阮文廉,张建润,卢熹,黄大成..基于振动压路机驾驶室液压气隔振的低频率平顺性[J].东南大学学报（英文版）,2020,36(3):278-284,7.基金项目
The National Key Research and Development Plan (No.2019YFB2006402),Talent Introduction Fund Project of Hubei Polytechnic University (No.19XJK17R),the Joint Key Project Founded by Southeast University and Nanjing Medical University (No.2019DN0011). （No.2019YFB2006402）
