正面碰撞中基于新型前排安全座椅的后排约束系统优化研究  

A Research on the Optimization of Rear Seat Restraint System with a New Front Safety Seat for Frontal Crash

作　　者：洪亮[1] 葛如海[1] 

机构地区：[1]江苏大学汽车与交通工程学院,镇江212013

出　　处：《汽车工程》2015年第11期1277-1283,共7页Automotive Engineering

基　　金：江苏省普通高校研究生科研创新计划项目(CXLX12_0631);吉林大学汽车动态模拟国家重点实验室开放基金(20091106)资助

摘　　要：提出了一种新型汽车前排安全座椅,以实现正面碰撞中对后排乘员的约束保护。首先,采用碰撞仿真软件MADYMO建立了某轿车后排约束系统模型,进行仿真和试验验证,并利用该模型,分析确定能使乘员获得较好的保护的扭簧转动刚度为10N·m/(°)。接着通过灵敏度分析,选出5个较为敏感的参数。最后,以该5个参数为优化变量,由头部伤害指标HIC15、胸部压缩量D和枕骨伸张弯矩峰值M_(yoc)加权构成的综合伤害指标最小化为优化目标,通过响应面分析进行优化。优化后,后排女性乘员安全性显著提高,HIC15,D和M_(yoc)分别降低了37.76%,4.72%和56.08%。In this paper, a novel vehicle front safety seat is put forward to achieve the constraint and pro-tection of rear seat occupants in vehicle frontal crash. Firstly MADYMO is used to establish a model for the rear seat restraint system of a car, a simulation is conducted and verified by tests, and the rotational stiffness of torsional spring is determined by analysis to be 10N＆#183;m/（＆#176;） for the better protection of rear seat occupants. Then five more sensitive parameters are selected by a sensitivity analysis. Finally with these 5 sensitive parameters as design varia-bles and minimizing the combined injury criterion as objective function, composed of weighted head injury criterion HIC15, chest compression D and the peak stretch bending moment of occipital bone Myoc, an optimization is per-formed through response surface analysis. After optimization, the safety of rear seat female occupants is significantly enhanced with HIC15, D and Myoc reduced by 37. 76%,4. 72% and 56. 08% respectively.

关 键 词：正面碰撞 新型前排安全座椅 后排约束系统 优化 

分 类 号：U463.836[机械工程—车辆工程] U467.14[交通运输工程—载运工具运用工程]