Elastic wave scattering and dynamic stress concentrations in exponential graded materials with two elliptic holes |
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| Authors: | Chuanping Zhou Chao Hu Fai Ma Diankui Liu |
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| Affiliation: | 1. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai, 200092, China;2. College of Civil Science and Engineering, Yangzhou University, Yangzhou, 225127, China;3. College of Engineering, University of California, Berkeley, 94720, USA;4. College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, 150001, China |
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| Abstract: | Based on the elastodynamics, employing complex functions and conformal mapping methods, and local coordinates, the scattering of elastic waves and dynamic stress concentrations in infinite exponential graded materials with two holes are investigated. A general solution of the problem and expression satisfying the given boundary conditions are derived. The problem can be reduced to the solution of an infinite system of algebraic equations. As an example, numerical results of dynamic stress concentration factors for two elliptic holes in exponential graded materials are presented, and the influence of incident wave number and holes spacing on dynamic stress distributions is analyzed. |
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| Keywords: | Elastic waves scattering Dynamic stress concentrations Conformal mapping methods Local coordinate system Graded materials Two elliptic holes |
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