A WEDGE DISCLINATION DIPOLE INTERACTING WITH A COATED CYLINDRICAL INHOMOGENEITY  

作　　者：Yingxin Zhao Qihong Fang Youwen Liu 

机构地区：[1]State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University [2]College of Mechanical and Vehicle Engineering, Hunan University

出　　处：《Acta Mechanica Solida Sinica》2015年第1期62-73,共12页固体力学学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Nos.11172094 and 11172095);the New Century Excellent Talents in University(NCET-11-0122);Hunan Provincial Natural Science Foundation for Creative Research Groups of China(No.12JJ7001)

摘　　要：A three-phase composite cylinder model is utilized to study the interaction of a wedge disclination dipole with a coated cylindrical inhomogeneity. The explicit expression of the force acting on the wedge disclination dipole is calculated. The motilities and the equilibrium po- sitions of the disclination dipole near the coated inhomogeneity are discussed for various material combinations, relative thicknesses of the coating layer and the features of the disclination dipole. The results show that the material properties of the coating layer have a major part to play in alteringi the strengthening effect or toughening effect produced by the coated inhomogeneity.A three-phase composite cylinder model is utilized to study the interaction of a wedge disclination dipole with a coated cylindrical inhomogeneity. The explicit expression of the force acting on the wedge disclination dipole is calculated. The motilities and the equilibrium po- sitions of the disclination dipole near the coated inhomogeneity are discussed for various material combinations, relative thicknesses of the coating layer and the features of the disclination dipole. The results show that the material properties of the coating layer have a major part to play in alteringi the strengthening effect or toughening effect produced by the coated inhomogeneity.

关 键 词：three-phase composite disclination dipole coating layer complex variable function method 

分 类 号：TG174.4[金属学及工艺—金属表面处理]