In the numerical model, the direct restraint method and the Coulomb friction method are introduced. A simulated temperature method is used to realize pre-tighten force.

• 在模型建立中,接触面采用直接约束模型,摩擦力的模拟选用库仑摩擦模型,在施加预紧力时,采用了虚拟温度方法。