【Key words】 3D contact problems; orthotropic friction law; second-order cone; complementarity; variational principle
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介绍了三维接触问题的变分原理，推导了接触问题有限元计算公式，讨论了边界接触模式和接触条件。
The variation principle of the 3-D contact problem is introduced, the related formulas based on the finite element method are derived, and the contact mode and condition of the boundary are discussed.
本文提出了一种基于迭代技术的边界元法求解三维无滑动摩擦型弹性接触问题。
A boundary element method based on an iterative technique for solving the three-dimensional elastic contact problem without sliding is presented.
本文首先应用三维弹性边界元方法对一鼓形齿联轴器的多齿接触问题进行了数值计算分析，然后在专用试验台架上作了相关实测研究。
The multitooth contact problem of the crown gear coupling is analysed by using 3 D BEM. Actual measurements on a specially designed test bed are made.
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