A Mixed Elastic-Plastic Contact Model Considering Strain Hardening

doi:10.7652/xjtuxb201602022

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A Mixed Elastic-Plastic Contact Model Considering Strain Hardening

更新时间：2025-07-09

- A Mixed Elastic-Plastic Contact Model Considering Strain Hardening
- Vol. 50, Issue 2, Pages: 132-137(2016)
- 作者机构：
  
  重庆大学汽车工程学院,重庆,400044
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201602022
  CLC： O343.3
- Online First：10 February 2016，
  
  Published：2016
- 稿件说明：
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A Mixed Elastic-Plastic Contact Model Considering Strain Hardening[J]. 2016, 50(2): 132-137.
DOI：

A Mixed Elastic-Plastic Contact Model Considering Strain Hardening[J]. 2016, 50(2): 132-137. DOI： 10.7652/xjtuxb201602022.

摘要

为了更加真实地反映粗糙表面的实际接触情况

根据表面微凸体变化的连续性、单调性和光滑性原理提出了一种新的混合弹塑性接触模型。该模型在球体初始接触时

就考虑更小微凸体的塑性变形和较大变形量时的应变硬化。通过反正切函数构建一组函数

用来表征接触过程中变形状态的变化

利用Meyer硬度指数反映应变硬化的影响

进而导出接触面积和接触载荷的数学表达式。通过采用文献中已有的铜、铝合金和纯镍材料的实验测试结果

以及文献中不同的弹塑性接触模型的计算结果进行对比分析

结果表明

该模型的计算结果能够很好地与实验测试结果吻合

尤其是在大变形量、出现应变硬化的情况下

更能体现出该模型的优势。

Abstract

A new mixed elastic-plastic model for the real contact is developed to consider both plastic response of smaller asperity and strain hardening effects. It is assumed that the contact behavior is continuous

monotonic and smoothing. An arc-tangent function is used to express different contact status

and the Meyer hardness exponent is used to reflect the effect of strain hardening. Then a math model for both the contact area and the contact load is derived. The proposed model is tested using experimental results for copper

aluminum alloy and nickel reported in the literature

and compared with other contact models in the literature. The proposed model shows a good agreement with experimental results and a big advantage especially when strain hardening occurs.

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references

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Related Author

杨国庆 1

洪军 1

庄艳 1

朱林波 1

王东

徐超

陈天宁

Related Institution

State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University

School of Astronautics, Northwestern Polytechnical University

School of Mechanical Engineering, Xi'an Jiaotong University

College of Mechanical and Precision Instrument Engineering, XI'AN University of Technology

College of Mechanical and Electrical Engineering, Henan Agricultural University

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