The contact problems are non - linear problems , which relate to stress concentration , local boundary nonlinear , no - reversibility of shear force , and so on 接触问题是非线性问题，涉及到应力集中、局部边界非线性、切向力的不可逆性等一系列非线性问题。
Chen guo - ding , haiser h , haas w . analysis of elastomeric o ring seals using the finite element method j . mechanical science and technology ， 2000 ， 19 （ 5 ） ： 740742 廖日东，左正兴，邹文胜. o形圈对称超弹性接触问题的有限元分析[ j .润滑与密封， 1996 （ 5 ） ： 3034
The methods of dealing with the contact problems by the finite element method are researched in this thesis , and calculation and analysis combining engineer examples are carried on 本文就采用有限元法求解接触问题进行了研究，并结合工程实例做了计算与分析。
By the way of fem , we get the stress field and he greatest mises stress and its location under different landslide conditions 采用有限元方法按接触问题进行计算，得出了不同坡度、不同长度的滑坡发生时管道的应力分布，确定了最大mises应力发生的部位和失效长度。
There are considerable numbers of research concerning finite element method on contact problem and a lot of techniques such as mathematics programming , penalty method and so on 针对于接触问题的求解，目前已经发展了很多计算方法，如数学规划法、罚函数法等。
In this paper , a new interface - searching algorithm - boundary cell method ( bcm ) based on the fact that interface happens on the boundary surface is presented particularly 在接触问题中，接触搜寻是极其重要的。为此，本文提出了一种新的接触搜寻法? ?边界子域法( bcm ) 。
A constitutive model of 3d contact with friction is established with the use of penalty parameter and an incremental statement of problem is carried out 借助罚因子建立了三维摩擦接触边界的本构模型，给出了三维摩擦接触问题的增量描述，推导了接触问题的互补虚功方程。
7 . a fe - lcm program is developed for the analysis of 3d frictional contact problem and many examples verified the correctness of the model , method and program 研制了三维弹塑性接触问题有限元线性互补分析程序，通过众多考例的验证，表明了本文模型、方法和程序的正确性。
Firstly , the mathematics model of contact problems is introduced . the linear programming method has been studied in detail . solutions of the contact problems are given 首先，概述了已有的接触问题的解法，给出了接触问题的基本数学模型，对其中的线性规划法进行深入分析。
Liao ri - dong , zuo zheng - xing , zou wen - sheng . finite element analysis of the axial symmetric hyperelastic contact problem of the o rings [ j ] . lubricate and sealing , 1996 （ 5 ） ： 3034 廖日东，左正兴，邹文胜. o形圈对称超弹性接触问题的有限元分析[ j .润滑与密封， 1996 （ 5 ） ： 3034
