Dynamic Fracture Analysis of an Interface Crack in Functionally Graded Piezoelectric Bimaterials
碩士 === 淡江大學 === 航空太空工程學系碩士班 === 100 === In this study, the transient response of an interface crack between two functionally graded piezoelectric layers is investigated. The composite is subjected to uniformly anti-plane mechanical and in-plane electric displacement impacts under permeable and imper...
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| Format: | Others |
| Language: | zh-TW |
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2012
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| Online Access: | http://ndltd.ncl.edu.tw/handle/31257630654966081712 |
| Summary: | 碩士 === 淡江大學 === 航空太空工程學系碩士班 === 100 === In this study, the transient response of an interface crack between two functionally graded piezoelectric layers is investigated. The composite is subjected to uniformly anti-plane mechanical and in-plane electric displacement impacts under permeable and impermeable boundary conditions. The integral transform, Cauchy singular integral equation methods, and Chebyshev polynomial expansions are applied to obtain stress intensity factors and electric displacement intensity factors in the Laplace transform domain. Durbin’s method is then used to carry out the numerical inversion of Laplace transform. The accuracy of numerical results is examined and the applicable numerical parameters are suggested by the experience of calculation. Finally, the numerical results are evaluated and discussed in detail.
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