某车型小偏置碰撞约束系统及假人评定项优化研究  

Study on Optimization of Small Offset Crash Restraint System and Dummy Evaluation Items of A Vehicle

作　　者：毕思刚 张悦 王建勋 刘彦博 陈哲 Bi Sigang;Zhang Yue;Wang Jianxun;Liu Yanbo;Chen Zhe(FAW Car Co.,Ltd.,Changchun 130013)

机构地区：[1]一汽奔腾轿车有限公司,长春130013

出　　处：《汽车技术》2023年第2期23-27,共5页Automobile Technology

摘　　要：为提升某车型正面25%偏置碰撞试验乘员保护性能,开展了假人伤害等级评定项、约束系统和假人运动等级评定项试验方法及优化方案研究。首先,通过仿真对标试验的方式建立准确模型;然后,增加侧气帘、优化安全带、安全气囊点火时间及参数、优化转向管柱支架和仪表板支架结构;最后,利用计算机辅助工程(CAE)方法进行了验证,结果表明:假人大腿和髋部、腿部和脚部等级由一般(M)和较差(P)提升到了优秀(G)和良好(A),约束系统和假人运动等级评定项由较差(P)提升为优秀(G);小偏置碰总体评价由较差(P)提升为优秀(G);乘员加权伤害指标(WIC)降低了22.97%。In order to improve the occupant protection performance of a vehicle in the frontal 25%offset crash test,the research on the test methods and optimization schemes of the evaluation items of the injury level of the dummy,the restraint system and the motion level of the dummy was carried out.First,an accurate model was established by simulation and benchmarking test.Then,side air curtain was added,the seat belt and ignition time and parameters of airbag were optimized,and the structure of steering column bracket and instrument panel bracket were also optimized.Finally,it was verified by CAE.The results show that the grades of the thighs and hips,legs and feet of the dummy have been improved from Marginal(M)and Poor(P)to Good(G)and Acceptable(A),and the evaluation items of the restraint system and the motion grade of the dummy have been improved from Poor(P)to Good(G).The overall evaluation of small offset crash was improved from Poor(P)to Good(G).The occupant Weighted Injury Criteria(WIC)decreased by 22.97%.

关 键 词：小偏置碰撞 约束系统 乘员安全 侧气帘 

分 类 号：U461.91[机械工程—车辆工程]