某车型正面偏置碰撞中踏板侵入超标的优化  

Optimization of excessive pedal intrusion in 40% offset crash on a specific vehicle

作　　者：管立君[1] 肖海涛[1] 祁洪娟[1] 刘卫国[1,2] 王纯[1] 周大永[1] 赵福全[1,2] 

机构地区：[1]浙江吉利汽车研究院有限公司 [2]浙江省汽车安全控制技术重点实验室

出　　处：《汽车安全与节能学报》2013年第3期232-237,共6页Journal of Automotive Safety and Energy

基　　金：浙江省汽车安全控制技术重点实验室建设(2009E10012)

摘　　要：64 km/h 40%正面可变形壁障偏置碰撞是中国新车评价规则(C-NCAP)和欧洲新车评价规则(Euro-NCAP)测试重点考核的项目。为解决某车型在这种碰撞中存在的踏板侵入量严重超标问题,该文使用整车碰撞仿真模型,计算了踏板安装区域的变形程度,分析了机舱纵梁的变形模式,优化了车身结构,增大机舱左纵梁的吸能效果和优化变形模式,加强中央通道区域的强度。仿真验证的结果表明:优化后碰撞中,油门踏板后移量降低了48.5%,上移量降低了29.1%;降低了踏板安装区域结构的变形,降低了踏板侵入量。因此,该优化方案解决了踏板侵入量超标问题,提升了整车安全性能。The 64-km/h 40% offset deformable barrier （ODB） frontal crash is an important item in the China New Car Assessment Program （C-NCAP） and inthe Euro-NCAP test. This paper calculates the deformation at pedal fixing area using a vehicle crash simulation model and analyzes deformation mode of side rail in engine room to solve the excessive pedal intrusion into a vehicle in 40% offset crash, and gives an optimized solution to vehicle body structure. The simulation validation results show that acceleration pedal reward is reduced by 48.5% with the upward being reduced by 29.1%, therefore, center tunnel area strength is enhanced, and pedal fixing area structural deformation is lessened incrashes,which improves the energy-absorbing effect of left side rail in engine room, perfects deformation mode, and reduces pedal intrusion. Therefore, the optimized solution solves excessive pedal intrusion of this vehicle, therefore improving vehicle safety.

关 键 词：汽车安全 正面碰撞 偏置可变形壁障(ODB) 偏置碰撞 踏板侵入 优化 新车评价规程(NCAP) 

分 类 号：U461.91[机械工程—车辆工程]