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首页> 外文期刊>Tribology International >A thermoelastic contact model between a sliding ball and a stationary half space distributed with spherical inhomogeneities
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A thermoelastic contact model between a sliding ball and a stationary half space distributed with spherical inhomogeneities

机译：滑动球和静止半空间之间的热弹性接触型号分布在球形不均匀性分布

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摘要

The present study explores the thermoelastic contact behaviours of two heterogeneous bodies subjected to both contact and frictional heat loads. The equivalent inclusion method (EIM) is employed to model the steady state heat conduction in contacting materials involving spherical inhomogeneities. The explicit analytical solutions for the thermal field inside and outside an inhomogeneity embedded in an infinite medium are derived, which are utilized to solve thermal field of semi-infinite medium with the help of the method of images. Further, a thermoelastic contact model for convex bodies with distributed spherical inhomogeneities is developed. The interaction between any adjacent inhomogeneities is fully considered. A conjugate gradient method and a fast Fourier transform algorithm are introduced to enhance the computation efficiency. Finally, parametric study about the influences of inhomogeneity material properties and contact parameters on the volumetric stress integral of the contact body is conducted, demonstrating the fatigue performance of heterogeneous contact bodies under thermoelastic loads.
机译：本研究探讨了两个经受接触和摩擦热载的两个异质体的热弹性接触行为。使用等效的包含方法（EIM）来模拟涉及球形不均匀性的接触材料中的稳态导热。推导出嵌入无限介质中的热场的显式分析解，其嵌入无限介质中的不均匀性，其利用在图像的方法的帮助下解决半无限介质的热场。此外，开发了具有分布式球形不均匀均匀性的凸起体的热弹性接触模型。完全考虑任何相邻的不均匀性之间的相互作用。引入了共轭梯度方法和快速傅里叶变换算法，以提高计算效率。最后，对接触体的体积应力整体进行了关于不均匀性材料特性和接触参数的参数研究，展示了热弹性负载下的异质接触体的疲劳性能。

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