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首页> 外文期刊>Journal of thermal stresses >AN AXISYMMETRIC PROBLEM OF A PARTIALLY INSULATED CRACK EMBEDDED IN A GRADED LAYER BONDED TO A HOMOGENEOUS HALF-SPACE UNDER THERMAL LOADING
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AN AXISYMMETRIC PROBLEM OF A PARTIALLY INSULATED CRACK EMBEDDED IN A GRADED LAYER BONDED TO A HOMOGENEOUS HALF-SPACE UNDER THERMAL LOADING

机译：热载荷作用下粘结在均质半空间上的梯度层中部分绝缘裂纹的轴对称问题

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The elastic-static problem of a partially insulated axisymmetric crack embedded in a graded coating bonded to a homogeneous substrate subjected to thermal loading is considered. The coating's gradient is parallel to the axisymmetric direction and is orthogonal to the crack plane. The graded coating is modeled as a nonhomogeneous medium with an isotropic constitutive law. Using Hankel transform, the heat conduction and the plane elasticity equations are converted into singular integral equations, which are solved numerically to yield the temperature distribution and the crack tip stress intensity factors. The Finite Element Method was additionally used to model the crack problem. The main objective of this paper is to study the influence of the material nonhomogeneity, partial insulation of the crack faces and the crack position on the stress intensity factors for the purpose of gaining better understanding on the behavior of graded coatings.
机译：考虑了部分绝缘的轴对称裂纹的弹性静力学问题，该裂纹嵌入在梯度涂层中，该梯度涂层粘结到承受热负荷的均质基材上。涂层的梯度平行于轴对称方向，并且垂直于裂纹平面。将渐变涂层建模为具有各向同性本构律的非均匀介质。使用汉克尔变换，将热传导和平面弹性方程式转换为奇异积分方程，对其进行数值求解，以得出温度分布和裂纹尖端应力强度因子。此外，还使用有限元方法对裂纹问题进行建模。本文的主要目的是研究材料非均质性，裂纹面的部分绝缘和裂纹位置对应力强度因子的影响，以便更好地了解渐变涂层的性能。

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