Pseudo-interference stiffness estimation, a highly efficient numerical method for force evaluation in contact problems
Pseudo-interference stiffness estimation, a highly efficient numerical method for force evaluation in contact problems
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DOI：
10.1007/s00366-003-0250-6
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发表时间：
2003-08
影响因子：
8.7
通讯作者：
M. Pimsarn;K. Kazerounian
中科院分区：
文献类型：
--
作者：
M. Pimsarn;K. Kazerounian
本文提出了一种评估接触弹性固体接触柔度和接触载荷的新方法——伪干涉刚度估计（PISE）。PISE方法是基于两个假定刚体的几何重叠的评估和基于这种人工重叠面积（或体积）的接触力的估计。本文利用PISE方法和有限元接触模型求解了一个双盘碰撞问题的动态仿真实例。两种方法得到的碰撞过程中接触力和速度的变化是一致的。然而，PISE方法在计算上比有限元接触分析快几个数量级（在我们的数值模拟中约为3000倍）。所提出的方法将在接触体的接触力逼近，如正齿轮齿的啮合，凸轮的分析和综合，机器人抓取和许多其他应用中具有实际应用价值。
This paper presents a novel method, Pseudo-Interference Stiffness Estimation (PISE), for evaluating the contact compliance and the contact load in the contacting elastic solids. The PISE method is based on the evaluation of the geometric overlap of two assumedly rigid bodies and estimation of the contact force based on this artificial overlap area (or volume). In this paper, an example of the dynamic simulation of two disk collision problem is solved both by PISE method and finite element contact model. The contact force and velocity changes during impact from both methods are shown to be in good agreement. However, PISE method is, computationally, orders of magnitude (about 3000 times in our numerical simulations) faster than finite element contact analysis. The proposed method will be of practical use in contact force approximation of contacting bodies, such as meshing of spur gear teeth, cam analysis and synthesis, robotic grabbing, and numerous other applications.