同时，给出了不同条件下密集颗粒样本的生成方法，分析了边界应力、初始构型、加载速率、粒子间的摩擦系数等对颗粒系统目标构型的影响。
The influences of boundary stress, initial configuration, loading rate and friction coefficient between particles on the state and configuration of dense granular system are also examined.
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.
还给出了表面摩擦力系数和边界层位移厚度的计算结果。
Results of calculated skin friction and displacement thickness are given.
对于速度边界层提出了相似性解的解析结果，给出了速度分布、边界层厚度、摩擦阻力和水头损失的解析计算表达式。
Calculation formula of velocity distribution, boundary layer thickness, friction force and loss of water head are given out, in accordance with the result from theory analysis of similitude solution.
滚动轴承的动力学接触包含了多体接触、滑动、摩擦、几何非线性、材料非线性、边界非线性的复合接触问题。
It is a compound contact problem of rolling bearings dynamic contact combined of multi-body contact, friction, sliding, material nonlinearity, geometric nonlinearity.
本文根据计算结果，研究了边界层中的微气泡对平板表面摩擦阻力的影响。
The effect of microbubbles in the boundary layer on the skin friction of the plate is presented in this paper based on the computational results.
本文根据计算结果，研究了边界层中的微气泡对平板表面摩擦阻力的影响。
The effect of microbubbles in the boundary layer on the skin friction of the plate is presented in this paper based on the computational results.
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