#br# 汽车前保险杠低速碰撞试验计算分析方法

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振动与冲击 ›› 2017, Vol. 36 ›› Issue (16) : 248-254.

论文

李旻1，夏彰阳1，李云飞1，尤黎民2，何鼎峰2，上官文斌1

作者信息 +

Calculation and analytical methods for front bumpers of a vehicle at low-speed impact test

LI Min1, XIA Zhang-yang1, LI Yun-fei1, YOU Li-min2, HE Ding-feng2, SHANGGUAN Wen-bin1

Author information +

文章历史 +

摘要

对比分析了各国保险杠低速碰撞试验法规，参照欧洲ECE-R42、美国Part 581和加拿大CFVSS215法规，提出了4种保险杠低速碰撞分析的计算工况。建立了保险杠系统低速碰撞分析的有限元分析方法，以最大纵向变形量和吸能百分比作为主要评价指标，对一保险杠系统在4种工况下的碰撞性能进行有限元模拟分析。在其它条件不变的情况下，对比分析了不同厚度保险杠系统的动态响应特性及能量变化情况，并选择横梁厚度为2.0mm的保险杠。本文工作对低速碰撞下保险杠系统的设计具有借鉴意义。

Abstract

Bumper low-speed impact test regulations were comprehensively analyzed with reference to the European ECE-R42, the United States Part 581 and Canada CFVSS215 regulations, and four kinds of load conditions were proposed for analyzing bumper performances at low-speed crash. A finite element analysis method was presented for estimating crash performance of a bumper, and a calculation was carried out for a real car bumper under the proposed four conditions, with maximum longitudinal deformation and energy-absorbing rate as main evaluation indicators. Also, the influence of the bumper thickness on crash performance was investigated, and the results showed that the two-mm-thick beam should be chosen. The calculation and analytical methods and the calculated results presented in this paper are instructive for designing crash performances of a bumper at low-speed impact.

导出引用

李旻1，夏彰阳1，李云飞1，尤黎民2，何鼎峰2，上官文斌1. #br# 汽车前保险杠低速碰撞试验计算分析方法[J]. 振动与冲击, 2017, 36(16): 248-254

LI Min1, XIA Zhang-yang1, LI Yun-fei1, YOU Li-min2, HE Ding-feng2, SHANGGUAN Wen-bin1. Calculation and analytical methods for front bumpers of a vehicle at low-speed impact test[J]. Journal of Vibration and Shock, 2017, 36(16): 248-254

参考文献

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