Dynamic behaviour of the icosahedral Al--Pd--Mn quasicrystal with a Griffith crack |
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| Authors: | Wang Xiao-Fang Fan Tian-You and Zhu Ai-Yu |
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| Affiliation: | Department of Mathematics, School of Science,
Beijing
Institute of Technology, Beijing 100081, China; Department of Physics, School of Science, Beijing
Institute of Technology, Beijing 100081, China |
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| Abstract: | The dynamic response of an icosahedral Al--Pd--Mn quasicrystal with a
Griffith crack to impact loading is investigated in this paper. The
elastohydrodynamic model for the wave propagation and diffusion
together with their interaction is adopted. Numerical results of
stress, displacement and dynamic stress intensity factors are
obtained by using the finite difference method. The effects of wave
propagation, diffusion and phonon--phason coupling on the
quasicrystal in the dynamic process are discussed in detail, where
the phason dynamics is explored particularly. |
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| Keywords: | icosahedral quasicrystals dynamic response phason dynamics |
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