摘要
汽车车架结构可简化为纵梁箱形框架计算模型。将纵梁箱形框架离散为梁单元的组合，讨论在轴向冲击下的变形问题。采用弹塑性变形动力有限元方法对其进行数值计算得到变形与破坏模式，最大冲击载荷，载荷－时间曲线。
This paper discusses the large deformation problem of box beam under axial impact loading conditions, using large deformation elastioplastic dynamic finite element metheds, numerical calculations with better accuracy including deformation and collapse mode, collapse load time curve, load displacement curve, energy absorption capacity etc.
基金
国家计委九五重点科技攻关项目
