汽车碰撞过程是一个典型的大变形动态接触过程 ,在汽车结构耐撞性分析研究过程中 ,除了有限单元和材料模型方面的因素外 ,接触算法在计算时间和计算精度方面起着很重要的作用 .用于大规模动态接触问题的接触搜索过程大体可分为两阶段 :全局搜索和局部搜索 .目前使用较普遍的、有影响的全局搜索算法主要包括主从面算法、单曲面算法、级域算法、位码算法及NBS算法 ;局部接触搜索算法主要有基于“点面算法”、基于“小球算法”、基于光滑曲面 (曲线 )算法三大类 .接触界面算法目前主要有拉氏乘子法和罚函数法 ,以及扰动拉氏法和扩大拉氏法 .此外 ,接触问题的并行计算也是不可忽视的研究内容 .分析接触算法的研究现状 ,可以推动汽车耐撞性分析的进一步研究 Vehicle collision process is a typical large deformation dynamic contact process. In the process of automobile structural crashworthiness analysis, the contact algorithm plays a very important role in the computation time and calculation accuracy except for the finite element and material model . The contact search process for large-scale dynamic contact problem can be roughly divided into two stages: global search and local search.Now the most popular and influential global search algorithms mainly include the master-slave algorithm, single-surface algorithm, level Domain algorithm, bit-code algorithm and NBS algorithm.The local contact search algorithms are mainly based on the “point-surface algorithm”, based on the “ball algorithm”, based on the smooth surface (curve) Sub-law and penalty function method, as well as perturbation Laplace’s law and extended Laplace’s law.In addition, the parallel computing of contact problem is also an important research content.Analyzing the current research status of contact algorithm can promote the further study of automobile crashworthiness analysis