期刊论文

Finite Element Analysis of Conical Indentation of Elastic-plastic Film/Substrate Systems

中文

南华大学学报(自然科学版)

1673-0062

2009

23

4

56-61

10.19431/j.cnki.1673-0062.2009.04.014

国家自然科学基金重点基金资助项目（50531060）； 衡阳市科技局基金资助项目（KJ01）；

本校为第一机构

使用量纲分析和有限元法探讨了圆锥性压头压入韧性薄膜/韧性基底体系的力学响应.根据量纲分析,我们建立了压入响应和薄膜及基底的力学参量的无量纲关系.通过对压痕曲线的几个关键变量研究,发现最大压痕荷载取决于压入的深度、薄膜和基底的弹塑性性能,当压入适当深度时初始卸载斜率不受基底的屈服强度的影响.这些结论有利于深入研究韧性薄膜/韧性基底体系的压痕过程,提供了一种从锥形压痕试验中获得薄膜和基底的力学性能的方法.

Dimensional analysis and finite element method（FEM） have been used in this paper to investigate the conical indentation of elastic plastic film/substrate systems.The scaling relationships derived from dimensional analysis bridge the indentation response and the elastic-plastic properties of both film and substrate.Several key variables of an indentation curve are revealed and examined,which can indicate that the maximum indentation force depends on the elastic-plastic properties of both film and substrate and the initial unloading slope is in...