Abstract：Quasicrystals have widespread application values and prospects because of their excellent physical and mechanical properties. In this work, based on Bak’s dynamic model of quasicrystals, the moving straight dislocations in decagonal quasicrystals are investigated in detail. The closed-form expressions for elastic displacement and stress fields are obtained by extending the Stroh formalism. Effects of the moving velocity of dislocation and the phonon-phason coupling elastic constant on the hoop displacements and stresses are discussed. The results show that the greater the moving velocity of dislocation is, the more significantly the displacements and stresses in the phonon and phason field are affected. Finally, the dynamic physical characteristics of dislocations are revealed, and the wave behavior is checked in phonon and phason fields.
2017, Vol. 38 
