立方准晶材料中的运动螺型位错  

Moving Screw Dislocation in Cubic Quasicrystal

作　　者：周旺民[1] 宋玉海[2] 

机构地区：[1]浙江工业大学机电工程学院,杭州310032 [2]河北工程学院数理系,河北邯郸056038

出　　处：《应用数学和力学》2005年第12期1459-1462,共4页Applied Mathematics and Mechanics

基　　金：国家自然科学基金资助项目(10372016)

摘　　要：发展了立方准晶的位错弹性理论.通过引入位移势函数,使得立方准晶的反平面弹性动力学问题归结为求解两个波动方程,得到了运动螺型位错的位移场、应力场与能量的解析表达式及运动位错的速度极限.这些为研究此固体材料的塑性变形的物理机理提供了重要的信息.The elasticity theory of the dislocation of cubic quasicrystals is developed. The goveming equations of anti-plane elasticity dynamics problem of the quasicrystals were reduced to a solution of wave equations by introducing displacement functions, and the analytical expressions of displacemeats, stresses and energies induced by a moving screw dislocation in the cubic quasicrystailine and the velocity limit of the dislocation were obtained. These provide important information for studying the plastic deformation of the new solid material.

关 键 词：立方准晶 螺型位错 弹性场 反平面弹性问题 

分 类 号：O753.3[理学—晶体学] O347.41