摘要
为了提高全域车车辆悬架的性能,对全域车悬架下控制臂进行轻量化设计及强度校核。以某全域车悬架下控制臂为研究对象,对悬架下控制臂模态和控制臂在典型工况下的强度进行了有限元分析。设计了悬架下控制臂模态试验系统并进行了模态试验验证。对悬架下控制臂进行了轻量化设计并进行强度校核。首先,综合运用HyperWorks有限元软件建立下控制臂有限元模型,并进行自由模态分析,通过搭建悬架下控制臂模态试验系统对下控制臂构件进行了模态试验验证。其次,在此基础上,通过对全域车悬架下控制臂典型工况分析和归类,参考实际悬架下控制臂工作实况,添加下控制臂实际边界约束条件进行了典型工况强度有限元分析。然后,结合分析结果,选取下控制臂相关位置为信号测量点,在相关测量点位置粘贴应变片传感器,借助液压伺服系统,设计了悬架下控制臂强度试验台,对典型工况全域车下控制臂强度进行试验验证。最后,采用连续体拓扑优化中变密度法对悬架控制臂进行了轻量化设计。结果表明:悬架下控制臂模态仿真分析与模态试验振型一致,固有频率误差在8%之内;强度仿真分析结果与试验结果相对误差在10%以内;下控制臂轻量化后质量减少了19.1%,而最大应力值降低至少4%,保证了悬架下控制臂的强度性能。
In order to improve the performance of all-terrain vehicle suspension,the lightweight design and strength check of the lower suspension control arm of all-terrain vehicle are carried out.Taking the lower control arm of all-terrain vehicle suspension as the study object,the modal of the lower control arm and the strength of the control arm under typical working conditions are analyzed by using finite element method.The modal test system of control arm under suspension is designed and verified by modal test.The lightweight design and strength check of the control arm under the suspension are carried out.First,the finite element model of the lower control arm is established by using the software HyperWorks,and the free modal analysis is carried out.Second,on this basis,by analyzing and classifying the typical working conditions of the control arm under the all-terrain vehicle suspension,and referring to the actual working conditions of the control arm under the suspension,the strength finite element analysis of typical operating conditions is carried out by adding the actual boundary constraint conditions of the lower control arm.Then,based on the analysis results,the strength test-bed of the lower control arm is designed by means of hydraulic servo system,the relevant position of the lower control arm is selected as the signal measuring point,the strain gauge sensor is pasted at the relevant measuring point,and the strength of the control arm under the full range vehicle is tested and verified.Finally,the variable density method of continuum topology optimization is used to design the lightweight suspension control arm.The result shows that(1)the modal simulation analysis of the control arm under suspension is consistent with the modal test,and the natural frequency error is within 8%;(2)the relative error between simulation result and test result is less than 10%;(3)the weight of the lower control arm is reduced by 19.1%,and the maximum stress is reduced by at least 4%,which ensures the strength performance of the
作者
邹喜红
苟林林
傅雷
蒋和跃
刘俚彤
ZOU Xi-hong;GOU Lin-lin;FU Lei;JIANG He-yue;LIU Li-tong(Key Laboratory of Advanced Manufacturing Technology for Automobile Parts of Ministry of Education,Chongqing University of Technology,Chongqing 400054,China;Chongqing Jialing Quanyu Motor Vehicle Co.,Ltd.,Chongqing 404100,China;The Sixth Military Representative Office of the Army Equipment Department in Chongqing Region,Chongqing 404100,China)
出处
《公路交通科技》
CAS
CSCD
北大核心
2023年第12期227-235,共9页
Journal of Highway and Transportation Research and Development
基金
国家重点研发计划项目(2018YFB0106100)
重庆市科技重大主题专项重点研发项目(cstc2018jszx-cyztzxX0005)
重庆巴南区科技成果转化及产业化专项(2021TJZ004)
电动汽车产业技术创新战略联盟定向共性技术项目(CA2019)。
关键词
汽车工程
轻量化
变密度法
悬架下控制臂
典型工况
automotive engineering
lightweight
variable density method
lower suspension control arm
typical working condition
