乘用车耐撞性能开发(43页).pdf

乘用车整车 耐撞性 被动安全 目录 1 何为“耐撞性” 2 耐撞性的影响因素 3 耐撞性的开发理论 4 耐撞性的开发逻辑 何为 “耐撞性” WHATS CRASHWORTHINESS 1. 何为“耐撞性”  WHATS CRASHWORTHINESS Crashworthiness is the ability of a structure to protect its occupants during an impact. [wiki] Airbag  HOW Seatbelt Seat Deformation patterns Steering column Structrue intrusion Acceleration experienced Structure(Cra shworthiness) 1 1. 何为“耐撞性”  ORIGIN Crashworthiness is assessed retrospectively by analyzing injury risk in real-world crashes. 2 1. 何为“耐撞性”  IDENTIFY RISK FACTORS Often using regression or other statistical techniques to control for the myriad of confounders that are present in crashes. Who knows? 回归分析 （regression analysis) ：确定两种或两种以上变量间相互依赖 的定量关系的一种统计分析方法。 3 1. 何为“耐撞性”  HISTORY 40s John Stapp: The limits of human tolerance 49 SAAB: Incorporated safety thinking into automobiles US Army: Serious accident analysis 50s US Army: Develop energy absorbing seats 50s