| 基于数值仿真的波形护栏防阻块优化设计 |
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| 引用本文： | 吴中,施金金.基于数值仿真的波形护栏防阻块优化设计[J].大连交通大学学报,2012(5):58-62. |
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| 作者姓名： | 吴中 施金金 |
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| 作者单位： | 河海大学土木与交通学院 |
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| 摘 要： | 对防阻块的碰撞性能进行了力学分析，找出了改善防阻块吸能效果及防绊阻能力的主要因素，提出将六边形防阻块优化为十边形防阻块的设计方案．使用LS-DYNA在不同撞击程度下，对防阻块进行碰撞分析，发现优化防阻块的碰撞性能有较大提升,通过实车碰撞数值实验得出，由于优化防阻块抗变形能力得到提升，因而减小了立柱对车辆前轮的绊阻效应，增强了整体护栏结构的吸能导向作用．
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| 关 键 词： | 波形护栏 防阻块 吸能效果 防绊阻能力 LS-DYNA仿真 |
Optimal Design of W-Beam Blocks Based on Numerical Simulation |
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| WU Zhong,SHI Jin-jin.Optimal Design of W-Beam Blocks Based on Numerical Simulation[J].Journal of Dalian Jiaotong University,2012(5):58-62. |
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| Authors: | WU Zhong SHI Jin-jin |
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| Institution: | (College of Civil and Transportation Engineering,HeHai University,Nanjing 210098,China) |
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| Abstract: | Based on Mechanical analysis of Blocks,the main factors to improve energy absorption and the stumbling prevention ability are deternined,and a design is proposed to optimize the Hexagon blocks for decagonal blocks.Ls-Dyna crash analysis of the blocks finds out that the crash performance of optimal blocks is greatly improved.By the numerical crash experiment of a real car,the stumbling effect of the column is smaller due to stronger deformation resistance of the optimal blocks and the improved energy absorption and guiding abilities. |
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| Keywords: | W-beam blocks energy absorption effect preventing stumbling ability Ls-dyna simulation |
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