Three-Dimensional Thermoelastic Contact Model of Coated Solids with Frictional Heat Partition Considered
Three-Dimensional Thermoelastic Contact Model of Coated Solids with Frictional Heat Partition Considered
复制标题
考虑摩擦热分配的涂层固体三维热弹性接触模型
DOI：
10.3390/coatings8120470
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发表时间：
2018-12
期刊：
影响因子：
3.4
通讯作者：
Sun Dong
中科院分区：
文献类型：
--
作者：
Wang Tingjian;Ma Xinxin;Wang Liqin;Gu Le;Yin Longcheng;Zhang jingjing;Zhan Liwei;Sun Dong
本文通过引入摩擦热分配模型，建立了考虑摩擦热分配的涂层固体三维热弹性接触模型。采用基于快速傅里叶变换（FFT）的转换方法，将三维热弹性接触模型中的温升、法向位移和应力分量的影响系数从其对应的频响函数（FRF）中转换出来，推导了均匀涂层固体在机械载荷和表面摩擦热流耦合作用下的FRF在频域中通过引入二维傅立叶积分变换。采用基于共轭梯度法（CGM）和离散卷积快速傅里叶变换（DC-FFT）的快速数值算法求解了两体之间的接触压力和摩擦热分配。为了验证本模型的正确性，将本模型的解与文献中的热弹性接触模型的解进行了比较。利用该模型进行了数值研究，得出了滑动速度、热弹性性质和涂层厚度对涂层热弹性性能影响的一些具体结论。
In this paper, a three-dimensional thermoelastic contact model of coated solids with the frictional heat partition considered is developed by introducing a frictional heat partition model. The influence coefficients of the temperature rise, normal displacement and stress components in the three-dimensional thermoelastic contact model are converted from their corresponding frequency response functions (FRFs) with a conversion method based on the fast Fourier transform (FFT), and the FRFs of solids coated with a homogeneous coating subjected to a coupled action of the mechanical loading and the frictional heat flux on its surface are deduced in the frequency domain by introducing a two-dimensional Fourier integral transform. The contact pressure and the frictional heat partition between the two bodies are solved by employing a fast numerical algorithm based on the conjugate gradient method (CGM) and a discrete convolution fast Fourier transformation (DC-FFT). Comparison between the solutions of the present model and those of a thermoelastic contact model in literature is conducted in order to validate the present model. Several specific conclusions on the effect of the sliding speed, thermoelastic properties and thickness of the coating are drawn based on the result of numerical investigation by utilizing the present model.
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