| 基于LS-DYNA的7075铝合金汽车保险杠碰撞仿真分析 |
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| 引用本文： | 刘海江,张夏,肖丽芳.基于LS-DYNA的7075铝合金汽车保险杠碰撞仿真分析[J].机械设计,2011,28(2). |
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| 作者姓名： | 刘海江 张夏 肖丽芳 |
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| 作者单位： | 同济大学机械工程学院,上海,201804 |
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| 基金项目： | 国家高技术研究发展计划(863计划)资助项目(2008AA04Z105) |
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| 摘 要： | 为了使汽车轻量化,将7075铝合金应用于汽车保险杠系统中。通过有限元软件LS-DYNA对不同厚度保险杠模型的低速对中碰撞进行仿真分析,选用2.5 mm厚加强板和2.0 mm厚齿状横梁,相比原钢质保险杠质量下降20.5%。最后对所选保险杠进行对中碰撞仿真分析。结果显示该保险杠不仅质轻,而且吸能充分,满足碰撞安全要求。
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| 关 键 词： | 保险杠 轻量化 碰撞仿真 有限元 |
Collision simulation analysis of 7075 aluminum alloy car bumper based on LS-DYNA |
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| LIU Hai-jiang,ZHANG Xia,XIAO Li-fang.Collision simulation analysis of 7075 aluminum alloy car bumper based on LS-DYNA[J].Journal of Machine Design,2011,28(2). |
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| Authors: | LIU Hai-jiang ZHANG Xia XIAO Li-fang |
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| Affiliation: | LIU Hai-jiang,ZHANG Xia,XIAO Li-fang(College of Mechanical Engineering,Tongji University,Shanghai 201804,China) |
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| Abstract: | In order to lightweight cars,the 7075 aluminum alloy was adopted in automotive bumper systems.The simulation analysis of low-speed centering collision of bumpers with different thickness was carried out by using finite element analysis software LS-DYNA.The stiffening plate with the thickness of 2.5 mm and the dentate beams with the thickness of 2.0 mm were chosen.The mass of the new bumper was lower by 20.5% compared with the original steel one.Finally the simulation analysis of low-speed centering collisio... |
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| Keywords: | bumper lightweight collision simulation finite element |
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