The thermoelastic state of a bi-material with an open gas-filled interface crack
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Pidstryhach Institute for Applied Problems of Mechanics and Mathematics, NASU, Lviv, Ukraine
Submission date: 2018-08-22
Acceptance date: 2018-10-24
Publication date: 2019-04-15
Journal of Theoretical and Applied Mechanics 2019;57(2):331-341
The thermoelastic behavior of a bi-material with a gas-filled interface crack is investigated. The bi-material is subjected to a uniform tensile load and a uniform heat flow. The gas exerts pressure on the crack surfaces and offers thermal resistance proportional to the crack opening. The gas state is assumed to be described by the ideal gas law. The effects of gas mass, gas thermal conductivity and heat flux on the crack opening, interface temperature jump, gas pressure and stress intensity factors are analyzed. It is revealed that a bi-material with a heat-conducting crack exhibits the heat flow directional effect.
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