基于Johnson Cook失效分析的座椅背板结构优化  

Seat Backplane Structure Optimization Based on Johnson Cook Failure Analysis Closing

作　　者：梅一丹 严杰 刘盼[2] 夏汤忠[2] 李世泽 Mei Yidan;Yan Jie;Liu Pan;Xia Tangzhong;Li Shize(CATARC Automotive Component Test Center(Ningbo)CO.,LTD.,Zhejiang Ningbo 315104;Dongfeng Peugeot Citroen Automobile Co.,Ltd.,Hubei Wuhan 430056)

机构地区：[1]中汽研汽车零部件检验中心(宁波)有限公司,浙江宁波315104 [2]神龙汽车有限公司技术中心,湖北武汉430056

出　　处：《汽车实用技术》2020年第8期143-146,共4页Automobile Applied Technology

摘　　要：依据法规GB 15083-2019《汽车座椅、座椅固定装置及头枕强度要求和试验方法》,对带座椅背板结构车身进行行李动态冲击仿真分析,并对仿真分析与试验结果进行相关性分析。针对座椅背板结构失效,在有限元仿真模型中引入Johnson Cook失效模型,来提高CAE分析结果与试验的相关性。在对标相关性良好的有限元模型基础上,引入DOE正交试验矩阵,进行座椅背板结构及连接螺栓等级的综合优化设计,确保车身结构及座椅总成满足行李动态冲击法规试验的要求。According to the regulation GB 15083-2019"Strength Requirements and Test method of automobile seats,their anchorages and any head restraints",the dynamic impact simulation analysis of luggage on the body with seat backplane structure is carried out,and the correlation between simulation analysis and test results is analyzed.In order to improve the correlation between CAE analysis results and test results,Johnson Cook failure model is introduced into the finite element simulation model for seat backplane structure failure.On the basis of the finite element model with good standard correla-tion,DOE orthogonal test matrix is introduced to carry out the comprehensive optimization design of seat backplane structure and connecting bolt grade,so as to ensure that the body structure and seat assembly meet the requirements of dynamic impact test of luggage.

关 键 词：座椅背板 行李动态冲击 Johnson Cook失效分析 DOE正交试验 

分 类 号：U463.839.2[机械工程—车辆工程]