A phenomenological model for frictional contact accounting for wear effects
A phenomenological model for frictional contact accounting for wear effects
复制标题
考虑磨损效应的摩擦接触唯象模型
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
D. Owen
中科院分区：
文献类型：
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作者：
E. A. de Souza Neto;K. Hashimoto;D. Peric;D. Owen
提出了一种考虑磨损效应的摩擦接触的简单唯象模型。目标是对接触体在大滑动距离和可变法向压力下的摩擦行为进行数值模拟。在具有内部变量的热力学背景下，假设摩擦系数是摩擦功密度的函数，从而得出类似于经典加工硬化弹塑性的理论。描述了应用于板材的所提出模型的实验识别技术，并确定了工业中常用的一些钢板的材料参数。大规模问题模型的计算机模拟框架基于完全隐式有限元方案和牛顿-拉夫森方法。基于算子分割法（弹性预测器-摩擦滑动校正器）的鲁棒算法用于摩擦本构方程的数值积分。进行了一系列滑动试验的模拟，并将结果与实验进行了比较。
A simple phenomenological model for frictional contact accounting for wear effects is proposed. The objective is the numerical simulation of the frictional behaviour of contacting bodies subjected to large sliding distances and variable normal pressures. Within the context of thermodynamics with internal variables, the friction coefficient is assumed to be a function of the density of frictional work resulting in a theory analogous to classical work hardening elastoplasticity. The technique for experimental identification of the proposed model, applied to sheet materials, is described and the material parameters for some steel sheets commonly used in industry are determined. The framework for the computer simulation of the model in large scale problems is based on a fully implicit finite-element scheme and the Newton-Raphson method. A robust algorithm based on an operator split method (elastic predictor-frictional sliding corrector) is used for numerical integration of the friction constitutive equations. The simulation of a series of sliding tests is carried out and the results are compared with experiments.