基于行人腿部保护的保险杠吸能结构设计

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (12) : 171-175.

论文

基于行人腿部保护的保险杠吸能结构设计

贺岩松1,2 ，杨海威2 ，徐中明1,2 ，万鑫铭3 ，范体强3

作者信息 +

Bumper Energy Absorption Structure Design based on Pedestrian Leg Protection

HE Yansong1,2 , YANG Haiwei2, XU Zhongming1,2, WAN Xinming3, FAN Tiqiang3

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文章历史 +

摘要

建立了小腿与轿车前部的碰撞有限元模型，并运用LS-DYNA仿真求解，通过与Euro-NCAP实验结果对比，验证了有限元模型的准确性。对比分析5种截面形式的吸能板对行人的保护效果，选择了一种对行人保护效果较好的截面。为优化行人保护效果，以吸能板厚度和材料屈服强度为设计变量构造全因子实验，并拟合出腿部三项伤害指标的响应面模型。采用序列二次规划优化方法，得到对行人腿部保护较好的参数组合，为钢制吸能板的设计提供了依据。

Abstract

A finite element model of collision between a car and lower leg was established and simulated through LS-DYNA. According to Euro-NCAP regulation, the model was verified through experiment. A cross-section profile of steel energy absorption panel (EAP) was selected based on the pedestrian protection performance comparison of five structures. Taking the material yield strength and thickness of EAP as design variables, a full factorial experiment was conducted. The injury index Response Surface Model (RSM) of lower leg was fit based on the experiment results. An optimized parameter combination is obtained by using sequential quadratic programming method, which provides design guidance for the structure of steel EAP.

导出引用

贺岩松;;杨海威;徐中明;;万鑫铭;范体强. 基于行人腿部保护的保险杠吸能结构设计[J]. 振动与冲击, 2014, 33(12): 171-175

HE Yansong;;YANG Haiwei;XU Zhongming;WAN Xinming;FAN Tiqiang. Bumper Energy Absorption Structure Design based on Pedestrian Leg Protection[J]. Journal of Vibration and Shock, 2014, 33(12): 171-175