有初间隙摩擦接触问题的混合标架子结构变自由度数叠加解法

Mixed Coordinate Substructure Method with Variable Freedom Degree Superposition for Contact Problems with Friction and Initial Gaps

有初间隙摩擦接触问题有微分方程和变分不等式两种等价提法。本文建立了基于这两种提法下的混合标架子结构变自由度数叠加求解方法。运用本文方法不增加任何附加约束方程，且迭代只在接触面上进行，因此计算效率高。

The differential equation model and the variational inequality model are equivalent for contact problems with friction and initial gaps.The mixed coordinate substructure method is presented based on these equivalent models in this paper.No additional restraint equation is needed in the method.The computation efficiency is very high because the iteration is only executed on the contact surface.