基于ISIGHT的安全气囊盖板结构优化设计方法研究  

Study on Design Method of Structural Optimization for Air Bag Plastic Cover Plate Based on ISIGHT

作　　者：殷红梅[1] 刘永利[1] 王嘉南 梅烨 YIN Hongmei;LIU Yongli;WANG Jianan;MEI Ye(School of Mechanical Engineering,Huai’an vocational College of Information Technology,Huai’an 223003,China;College of Mechanical Engineering,Hainan University,Haikou 570228,China)

机构地区：[1]淮安信息职业技术学院机械工程学院,江苏淮安223003 [2]海南大学机电工程学院,海口570228

出　　处：《中国塑料》2020年第9期61-65,共5页China Plastics

摘　　要：选取某款弱化沟槽呈“H”形的聚碳酸酯/丙烯腈⁃丁二烯⁃苯乙烯共聚物(PC/ABS)合金材质安全气囊盖板为研究对象,并构建了其有限元仿真模型,对比有限元力学仿真分析结果与理论计算值验证了该有限元仿真模型的可靠性;通过ISIGHT软件集成Catia和ANSYS,选取安全气囊盖板弱化沟槽的横向长度、深度,纵向长度、深度4个参数作为设计变量,选取弱化沟槽横向最大应力与纵向最大应力作为响应变量,分析了设计变量对响应变量的贡献度分布特征并采用NSGA遗传算法对响应变量多目标优化。结果表明,横向长度、纵向深度对横向最大应力为负贡献度,横向深度、纵向长度为正贡献度;横向深度、纵向长度对纵向最大应力为负贡献度,横向长度、纵向深度为正贡献度;在合理范围内,4个参数值的优化设计,实现了横向最大应力提高和纵向最大应力降低的多目标优化,有效减少了安全气囊盖板爆破时产生的碎屑量,提升了产品的安全性能。A PC/ABS alloy⁃based air bag cover plate with a weakening groove of‘H’type was selected as a research object,and its finite element model was constructed.The reliability of finite element model was verified by comparing the results of finite element mechanical simulation analysis with theoretical calculation.Through the integration of CATIA and ANSYS in ISIGHT software,four parameters including the lateral width and depth,and longitudinal width and depth of the weakening groove of the air bag cover were selected as the design variables,and the lateral maximum stress and longitudinal maximum stress of the weakening groove were selected as the response variables.The contribution distribution of design variables to the response variables was analyzed,and the multi⁃objective optimization of the response variables was carried out by the NS⁃GA genetic algorithm.The results indicated that the lateral depth and longitudinal width had a negative contribution to the lat⁃eral maximum stress,but the lateral width and longitudinal depth had a positive contribution.On the other hand,the lateral width and longitudinal depth had a negative contribution to the longitudinal maximum stress,but the lateral depth and longitu⁃dinal width had a positive contribution.The multi⁃objective optimization of four parameter values were realized within the reasonable range,which could reduce the lateral maximum stress but increase the longitudinal maximum stress.This effec⁃tively reduces the amount of debris produced when the airbag cover plate explodes,thus improving the safety performance.

关 键 词：聚碳酸酯 丙烯腈⁃丁二烯⁃苯乙烯共聚物 合金 安全气囊盖板 优化 ISIGHT软件 

分 类 号：TQ325.7[化学工程—合成树脂塑料工业]