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软硬交替多层膜应力应变响应的分析

  • 简介: 原文 软硬交替多层膜应力应变响应的分析摘要 为了对软硬交替多层表面膜在磨粒作用下的应力应变响应、膜层界面剥离和裂纹的产生及扩展的影响等有一个定量和全面的了解,从而为多层表面膜的结构设计提供理论基础,采用大变形弹塑性有限元法对高速...
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原文

软硬交替多层膜应力应变响应的分析
摘要 为了对软硬交替多层表面膜在磨粒作用下的应力应变响应、膜层界面剥离和裂纹的产生及扩展的影响等有一个定量和全面的了解,从而为多层表面膜的结构设计提供理论基础,采用大变形弹塑性有限元法对高速钢基体上的TiN/Ti/TiN/Ti…多层膜在法向压痕作用下的力学行为进行了模拟和分析。为了研究膜层数和膜厚的影响,对从单层到16层的不同膜层体系进行了计算。通过对膜层的变形、最大应力随膜层数的变化、界面切应力分布和表面张应力分布等的分析得出了这些参数的分布及其随载荷和膜层数的变化规律。这些结果将为多层膜的结构优化设计提供定量的依据。
关键词:多层膜 有限元法 界面 应力 设计
STRESS AND STRAIN ANALYSIS OF
ALTERNATE HARD AND SOFT
MULTILAYERS
Zhu Youli Xu Binshi Ma Shining
(Armoured Forces Engineering Institute)
Abstract For a quantitative and better understanding of the stress and strain responses and their effects on interface debonding and crack initiation and propagation of alternative hard and soft multilayers under contact loading,to explore methodologies of optimum design of surface multilayers,large strain elastoplastic finite element method is used to evaluate the mechanical behaviors of TiN/Ti/TiN/Ti…multilayer films on high speed steel substrate under hard asperity indentation.Calculations are conducted on different film systems from single to 16 layers to investigate the effects of layer numbers and film thickness.Based upon analysis of film deformation,maximum bending stress,interfacial shear stress,and surface tensile stress,the development of these parameters via layer numbers and the applied load was better understood,which is expected to provide sound basis for the optimum design of multilayer film structures.
Key words:Multilayer films Finite element method Interface Stress Design


  目录

0 前言
1 问题的描述及有限元模型
2 计算结果及分析
3 结论


  参考资料

参考文献
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