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Effect of Oblique Loading on Energy Absorption in Bumper System

机译:倾斜载荷对保险杠系统能量吸收的影响

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摘要

The automobile energy-absorbing component equipped at the front end of car, is one of the most important automotive parts for crash energy absorption .The C- Chanel with two main longitudinal members will absorb most of the crash energy with a progressive folding deformation of a steel column. The longitudinal fail under progressive folding pattern which absorb shock energy. A rectangular tube with C- Chanel (Bumper System) of mild steel is analysed for its energy absorption capability using the finite element based software LS-DYNA. For preprocessing & post processing, software HYPERWORKS is used. Meshing is done using Belytschko Tsay shell element with 5 mm element size. Quasistatic Analysis are carried out in this work for axial loading. Mean crushing load is taken as a parameter for validation of the results. The analytical equations of square tubes are used for comparison of mean force. Energy absorption, Peak crushing force and deformation of the Bumper System are observed during the analysis.
机译:装在汽车前端的汽车能量吸收部件是吸收碰撞能量的最重要的汽车部件之一。C-Chanel带有两个主要纵向构件,可吸收大部分碰撞能量,并逐渐折叠变形。钢柱。纵向渐进折叠模式吸收了冲击能量。使用基于有限元的软件LS-DYNA分析了具有C-Chanel(保险杠系统)低碳钢的矩形管的能量吸收能力。对于预处理和后处理,使用软件HYPERWORKS。使用具有5 mm单元尺寸的Belytschko Tsay外壳单元进行网格划分。在这项工作中对轴向载荷进行了拟静力分析。将平均破碎负荷作为结果验证的参数。方管的解析方程式用于比较平均力。在分析过程中观察到能量吸收,峰值破碎力和保险杠系统的变形。

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