Tribology Letters ( IF 2.9 ) Pub Date : 2021-07-23 , DOI: 10.1007/s11249-021-01484-0 K. Akoussan 1 , M. Nouari 1 , A. Moufki 2
|
Abstract
A polycrystal model has been developed to study the tribological behavior of an aggregate BCC crystal under extreme contact loading conditions. The polycrystal behavior is defined from the local behavior of a single crystal within the framework of the Hill’s self-consistent scheme by considering the temperature effect. The tribological problem simulated in this work is a contact problem where a pin (tool) moves on a workpiece with a fairly high pressure and large sliding velocity. The results show the importance of the physical parameters as the hardening effect, the restoration of the dislocation and the crystallographic orientations of grains on the contact. The effect of the frictional heat partition and the friction coefficient have been particularly discussed.
Graphic Abstract
中文翻译：
使用晶体塑性本构模型模拟材料的摩擦学行为。热分配和摩擦的影响
摘要
已经开发了多晶模型来研究在极端接触载荷条件下聚集体 BCC 晶体的摩擦学行为。多晶行为是通过考虑温度效应在希尔自洽方案框架内从单晶的局部行为定义的。在这项工作中模拟的摩擦学问题是一个接触问题，其中销（工具）以相当高的压力和大的滑动速度在工件上移动。结果表明物理参数的重要性，如硬化效应、位错的恢复和接触上晶粒的结晶取向。已经特别讨论了摩擦热分配和摩擦系数的影响。
京公网安备 11010802027423号