弹性层状体系考虑层间接触非线性的有限单元分析法

FINITE ELEMENT ANALYSIS OF ELASTIC LAYER SYSTEM CONSIDERING NONLINEAR CONTACT CONDITION BETWEEN LAYERS

本文根据弹性层状体系层间接触面的实际状态,提出了一种考虑层间非线性接触的有限元增量子结构分析法。该方法把层间界面的接触状态当作应力的函数,根据剪应力与抗剪力的对比关系,决定各接触点的具体接触性质:分离、无摩擦接触(完全滑动)、有摩擦接触(完全连续或有摩擦滑动)等。计算表明,这种分析方法较弹性层状体系理论假定接触界面完全滑动或完全连续的分析结果,是更为合理的,

This paper presents a finite element incremental substructure method inconsideration of nonlinear contact condition between elastic layers. Inthis me-thod the contact property such as separate, fully slip, fully continuous or fric-tionally slip in different contact points are decided by taking the contactcondition between layers as function of stress and according to the ratio bet-ween shear stress and shear strength in interface. This method is more ration-al in comparison with the elastic layer system theory in which the contactcondition is assumed to be either fully slip or fully continuous.