摘要
为提高动力总成液压悬置系统的隔振性能,文章考虑了惯性通道解耦盘式液压悬置的幅频非线性特性,通过对液压悬置的上液室刚度和惯性通道内液阻进行参数识别,建立了具有幅频特性的液压悬置动刚度模型,并通过试验数据验证了该模型的准确性;在整车二自由度模型的基础上,采用模式搜索算法对液压悬置的内部参数、车身的传递系数和车身的传递加速度系数进行了优化设计。结果表明,该优化设计方法优化效果良好,而且在怠速工况下悬置传递到车身的动反力明显降低。
To improve the vibration isolation performance of the powertrain hydraulic mounting system,this paper considers the amplitude-frequency nonlinear characteristics of the inertial channel-decoupled disc-type hydraulic mount.By identifying the parameters of the upper chamber stiffness and the liquid resistance in the inertial passage,a hydraulic mount dynamic stiffness model with amplitude-frequency characteristics is established,and the accuracy of the model is verified by test data.Based on the two-degree-of-freedom vehicle model,the pattern search algorithm is adopted for the hydraulic mount to optimize the internal parameters,the transmission coefficient and transmission acceleration coefficient of the body.The results show that the optimization effect is good,and the reaction force transmitted from the mount to the body under idling conditions is significantly reduced.
作者
胡金芳
张博阳
徐有忠
李宗保
杨晋
HU Jinfang;ZHANG Boyang;XU Youzhong;LI Zongbao;YANG Jin(School of Automobile and Traffic Engineering, Hefei University of Technology, Hefei 230009, China;Key Laboratory of Automotive NVH and Reliability of Anhui Province, Wuhu 241000, China)
出处
《合肥工业大学学报（自然科学版）》
CAS
北大核心
2021年第8期1009-1012,1025,共5页
Journal of Hefei University of Technology：Natural Science
基金
国家自然科学基金资助项目(51505115)
汽车NVH与可靠性安徽省重点试验室开放基金资助项目(W2018JSZX0025)。
关键词
动力总成悬置系统
液压悬置
幅频特性
整车二自由度模型
优化设计
powertrain mounting system
hydraulic mount
amplitude-frequency characteristic
two-degree-of-freedom vehicle model
optimization design
