用有限元法模拟金属塑性成型过程的难点之一是接触边界条件的处理 ,本文着重介绍了处理金属塑性成型过程中接触问题的一般方法 ,包括接触边界的搜索、接触力的计算及接触热传导的计算三方面内容。运用 ANSYS提供的接触单元 ,模拟了 Y型三辊轧制过程及钢轨矫直过程的接触状态 ,结果与实际相符 One of the difficulties in simulating metal plastic forming process by finite element method is the handling of contact boundary conditions. This paper focuses on the general methods of dealing with the contact problems in metal plastic forming process, including the search of contact boundary, contact force calculation and contact heat conduction Calculate three aspects. Using the contact unit provided by ANSYS, the contact state between the Y-type three-roll rolling process and the rail straightening process was simulated and the results were in accordance with the actual conditions