Plastic analysis of crack problems in three-dimensional icosahedral quasicrystalline material |
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| Authors: | Wu Li Tian You Fan Yun Long Wu |
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| Institution: | 1. Department of Mathematics , Beijing Institute of Technology , Beijing 100081, China liwu823210@yahoo.com.cn;3. Department of Mathematics , Beijing Institute of Technology , Beijing 100081, China |
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| Abstract: | Due to their complexity, the basic plastic properties of all quasicrystalline materials are essentially unknown M. Feuerbacher, C. Thomas, K. Urban, Plastic behaviour of quasicrystalline materials, in Quasicrystals: Structure and Physical Properties, H.R. Trebin, ed., Wiley/VCH, Berlin, 2003]. Plastic deformation of cracks in icosahedral quasicrystals have been analyzed in a strict and systematic form and the crack tip opening displacement (CTOD) and size of the plastic zone around the crack tip was determined exactly. CTOD is suggested as a parameter of plastic fracture for quasicrystalline materials. The present work may also provide a novel methodology for plastic analysis of quasicrystals. |
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| Keywords: | elasticity plastic deformation quasicrystals |
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