SH波入射下正交各向异性双相介质界面附近圆孔的动应力集中

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Abstract Based on the complex function method and Green's function, the scattering of SH wave in orthotropic bimaterials with a circular cavity iwas discussed, and the dynamic response around the cavity iwas analyzed. Firstly, the two-dimensional analytical model of the problem iwas established, and the whole space iwas divided into two parts: the homogeneous isotropic upper half space and the orthotropic lower half space with a cylindrical cavity. Using Green's function method, the Green’s function expression of each point at the interface of two half spaces iwas derived, and the complex variable iwas introduced to construct the wave field expression for solving the displacement and stress in the region under the incidence of SH wave. Considering the continuity condition of the interface, the undetermined anti-plane force iwas loaded on the horizontal interface of two half spaces, and then the Fredholm definite solution integral equations awere derived and solved by the direct discretization method of weak singular integral equations. Finally, through the calculation and analysis of examplesthrough a series of calculating analysis, it iwas found that the orthotropic parameters of the medium, the number of incident waves, the angle and the buried depth of the cavity have significant effects on the dynamic stress concentration factor (DSCF) around the circular cavity in the lower half space.
Key words: SH-waves; Green’s function; anisotropic bimaterials interface; circular cavity; DSCF

Key words： SH-waves Green’s function anisotropic bimaterials interface circular cavity DSCF

Received: 23 May 2022 Published: 15 January 2023

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	LAN Guoguan 1
	ZHANG Cunfeng1
	XU Huanan1
	ZHANG Jianwei2

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LAN Guoguan 1,ZHANG Cunfeng1,XU Huanan1, et al. Dynamic stress concentration of a circular cavity near the interface of orthotropic bimaterials under SH wave incidence[J]. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(1): 301-307.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2023/V42/I1/301

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