给出了一种基于罚函数方法及库仑摩擦规律的点—面接触形式的接触单元法。根据等向滑动函数的概念 ,推导了粘着接触与滑动接触的接触单元刚度矩阵。由于这种方法在单元积分点引入接触约束 ,扩大了接触搜索面积 ,因而接触计算更加稳定。数值计算表明该方法能得到较好的结果。 A contact-point method based on penalty function method and Coulomb friction rule is proposed. According to the concept of isotropic sliding function, the contact element stiffness matrix of the adhesive contact and the sliding contact is derived. Since this method introduces a contact constraint at the cell integration point, the contact search area is enlarged, and the contact calculation is more stable. Numerical calculation shows that the method can get better results.