(1)Thermal stress intensity 1 factor of an edge interface crack under arbitrary material combination considering double singular stress fields before and after cracking
(1)Thermal stress intensity 1 factor of an edge interface crack under arbitrary material combination considering double singular stress fields before and after cracking
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(1)考虑开裂前后双奇异应力场的任意材料组合下边缘界面裂纹的热应力强度1因子
DOI：
10.1007/s00707-023-03531-4
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发表时间：
2023
期刊：
影响因子：
2.7
通讯作者：
Takayuki SHINMOTO and Nao-Aki NODA
中科院分区：
文献类型：
--
作者：
Kazuhiro ODA;Takayuki SHINMOTO and Nao-Aki NODA
本文讨论了双材料宽板在均匀温度变化下边缘界面裂纹的应力强度因子。结果表明，应力强度因子是由奇异应力场控制的，该奇异应力场包括一个常数项出现在无裂纹的双材料板的界面端。由于需要考虑热载荷特有的常数项，因此确认通过将拉伸下的SIF和均匀界面应力下的SIF叠加来分析SIF。最后，在整个Dundurs参数α和β范围内，对任意材料组合的热应力下的应力强度因子进行了系统的计算和列表。当α= 2β时，考虑到热载荷所特有的边界奇异性，将应力强度因子表示为α（= 2β）的函数。
This paper discusses the stress intensity factor (SIF) for an edge interfacial crack in a wide bimaterial plate under uniform temperature change. The results shows that the SIF is controlled by the singular stress field including a constant term appearing at the interface end of the bimaterial plate without the crack. Since the constant term peculiar to thermal loading is necessary to be considered, it is confirmed that the SIF is analyzed by superposing the SIF under tension and the SIF under uniform interface stress. Finally, the SIF under thermal stress is systematically calculated and tabulated for arbitrary material combination in the whole range of Dundurs parametersαandβ. Whenα= 2β, the SIF is presented as a function ofα( = 2β) by considering the logarithmic-type edge singularity, which is also peculiar to the thermal loading.