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学历：博士研究生毕业
学位：工学博士学位
性别：男
学科：力学. 航空宇航科学与技术. 材料科学与工程. 机械工程. 冶金工程. 先进制造. 航空工程. 材料工程. 冶金工程. 机械工程. 固体力学
多尺度与微纳米力学，梯度结构材料，界面力学，固体本构关系，应变梯度理论，晶体塑性有限元，离散位错动力学，分子动力学，高熵合金，大数据与机器学习，材料基因，极端力学，高性能材料
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2023-01-04 合作论文“Three-dimensional tractive rolling contact analysis of functionally graded coating-substrate systems with interfacial imperfection and frictional anisotropy”在Composite Structures在线发表
Highlights
•A multi-layered model of functionally graded (FG) coatings is proposed.
•The 3D tractive rolling contact problem of FG coating-substrate systems is solved.
•The interfacial imperfection and frictional anisotropy are considered.
•The arbitrarily varying thermo-elastic properties are allowed in the FG coating.
Abstract
The three-dimensional tractive rolling contact analysis of functionally graded coating-substrate systems is conducted. The surface frictional anisotropy is described by Coulomb’s orthotropic friction law, and the discontinuous transmissions of stress and displacement at the coating-substrate interface are formulated by a coupled dislocation-like and force-like interfacial imperfection. A multi-layered model is used to simulate the coating with arbitrarily varying thermo-elastic properties, and the conjugate gradient method and discrete convolution-fast Fourier transform algorithm are employed to obtain the spatial thermo-elastic responses of tractive rolling contact. The calculated results show that the maximum traction increases and the slip zone shrinks with increasing the ratio of lateral friction coefficient to the longitudinal friction coefficient, and the interfacial imperfection can cause a distinct jump of equivalent stress. Additionally, due to the slight frictional heat effect, the influences of inhomogeneous thermal parameters on contact pressure are much lower than those of shear modulus.
Link
https://doi.org/10.1016/j.compstruct.2023.116671