Effect of Yield Strength on the Static and Dynamic Behaviours of Cylindrical Contact

Q4 Materials Science International Journal of Surface Engineering and Interdisciplinary Materials Science Pub Date : 2022-01-01 DOI:10.4018/ijseims.304806

Tamonash Jana, A. Mitra, P. Sahoo

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Abstract

The present paper considers the influence of yield strength on static and dynamic behaviour of cylindrical contact interface. The semi-cylinder is assumed to be in plane stress condition. A quasi-static analysis is executed by means of finite element (FE) software package ANSYS 18.2 to obtain several contact parameters. A key parameter, quantifying nonlinearity for the single-asperity cylindrical contact system is educed from the interference-contact force plot. The dynamic characteristics of the cylindrical contact interface is investigated by utilizing this parameter. In order to investigate the same, the contact interface is represented by a single degree of freedom spring-mass-damper system and the analysis is carried out for free-undamped as well as forced-damped vibration. It is found that, with higher Young’s modulus, the dynamic contact system becomes more nonlinear in nature. It is found that, with lower value of yield strength, the dynamic contact system becomes more nonlinear in nature. Moreover, the contact system is found to possess hardening type of nonlinearity.

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屈服强度对圆柱接触静动态特性的影响

本文考虑了屈服强度对圆柱接触界面静态和动态特性的影响。假设半圆柱体处于平面应力状态。利用有限元软件包ANSYS 18.2进行准静态分析，以获得几个接触参数。从干涉接触力图中导出了单凸柱面接触系统的一个关键参数，即量化非线性。利用该参数对圆柱接触界面的动力学特性进行了研究。为了研究这一点，接触界面由单自由度弹簧-质量阻尼器系统表示，并对自由无阻尼和强迫阻尼振动进行了分析。研究发现，随着杨氏模量的增加，动态接触系统在本质上变得更加非线性。研究发现，随着屈服强度值的降低，动态接触系统在本质上变得更加非线性。此外，发现接触系统具有硬化型非线性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Surface Engineering and Interdisciplinary Materials Science Materials Science-Surfaces, Coatings and Films

CiteScore

2.60

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0.00%

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