%0 Journal Article
%T 车门内饰板总成耐撞性实验分析及优化<br>Experimental Study and Optimization on Crashworthiness Performance of a Car Door Trim System
%A 曲杰
%A 覃威
%A 郑温洛
%J 机械科学与技术
%D 2015
%X 应用试验方法和有限元法对车门内饰板总成的侧面耐撞性进行研究，并在此基础上优化缓冲块的结构设计，以获得更高的吸能特性。参照国家标准和行业规范，确定门内饰板总成胸部、腹部及胯部的碰撞区域，设计、制造冲击头，并在摆锤试验台上对其进行耐撞性测试；基于LS-DYNA平台，建立门内饰板总成的有限元模型，其中材料模型中主要参数均通过实验直接获取，基于建立的有限元模型进行耐撞性分析，模拟结果和试验结果符合较好；以建立的有限元模型为基础，基于实验设计和支持向量机方法建立缓冲块吸能特性的替代模型，并以此为基础对缓冲块进行结构优化。优化后缓冲块吸能增加86.0%，门内饰板总成吸能增加42.2%。<br>The impact resistance of a car door trim is studied through experiment and finite element simulation. In order to meet higher performance requirements, the design of the foam structure is optimized based on the research result. Based on the related industry standards of China, the door trim collision regions relative to the occupant chest, abdomen and hip are determined; then the impactor is designed and manufactured, and the crashworthiness tests are conducted on the pendulum test bench. The finite element model of the door trim is established based on LS-DYNA and the model parameters of the main components are determined through experiments directly, then the crashworthiness analysis is undertaken with the established finite element model. The experimental results and simulation results are in good agreement. Based on the method of experimental design and the support vector machines, a surrogate model is established and structural optimization of the foam structure is done, the results show that the energy absorbed by the foam increases by 86.0%, energy absorbed by the door trim system increases by 42.2%
%K 耐撞性
%K 有限元法
%K 结构优化
%K 支持向量机&lt
%K br&gt
%K energy absorption
%K finite element method
%K impact resistance
%K structural optimization
%K support vector machines
%U http://journals.nwpu.edu.cn/jxkxyjs/CN/abstract/abstract6159.shtml