标题： 多尺度弹塑性接触力学 显示英文标题

标题： Multiscale contact mechanics for elastoplastic contacts

摘要： 理解粗糙表面在发生塑性变形时的接触关系在许多应用中至关重要。 我们测试了Persson针对弹塑性固体提出的多尺度接触力学理论，假设渗透硬度为常数。 使用基于边界元方法的数值模型，我们模拟了平整刚性表面与具有随机粗糙表面的弹性理想塑性半空间之间的接触。 该理论对弹性、塑性和总接触面积的预测与数值结果定量一致。 模拟结果也支持理论中假设的边界条件，即在零应力和屈服应力处应力概率为零。 这些发现加强了该理论在硬度恒定系统中的有效性。 显示英文摘要

摘要： Understanding contact between rough surfaces undergoing plastic deformation is crucial in many applications. We test Persson's multiscale contact mechanics theory for elastoplastic solids, assuming a constant penetration hardness. Using a numerical model based on the boundary element method, we simulate the contact between a flat rigid surface and an elastic-perfectly plastic half-space with a randomly rough surface. The theory's predictions for elastic, plastic, and total contact area agree quantitatively with the numerical results. The simulations also support the boundary conditions assumed in the theory, namely that the stress probability vanishes at both zero and yield stress. These findings reinforce the validity of the theory for systems with constant hardness.