Dynamic conducting crack propagation in piezoelectric materials:Mode-II problem  

作　　者：CHEN HaoSen WEI WeiYi LIU JinXi FANG DaiNing 

机构地区：[1]PLA University of Science and Technology [2]Department of Engineering Mechanics, Tsinghua University [3]China Academy of Launch Vehicle Technology [4]Department of Engineering Mechanics, Shijiazhuang Tiedao University [5]LTCS and College of Engineering, Peking University

出　　处：《Science China(Technological Sciences)》2015年第5期769-774,共6页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11302260,11090330,11090331,11072003 and 11272222);the National Basic Research Program of China(Grant No.G2010CB832701)

摘　　要：This paper studies the dynamic conducting crack propagation in piezoelectric solids under suddenly in-plane shear loading. Based on the integral transform methods and the Wiener-Hopf technique, the resulting mixed boundary value problem is solved. The analytical solutions of the dynamic stress intensity factor and dynamic electric displacement intensity factor for the Mode II case are derived. Furthermore, the numerical results are presented to illustrate the characteristics of the dynamic crack propagation. It is shown that the universal functions for the dynamic stress and electric displacement intensity factors vanish if the crack propagation speed equals the generalized Rayleigh speed. The results indicate that the defined electro-mechanical coupling coefficient is of great importance to the universal functions and stress intensity factor history.

关 键 词：piezoelectric conducting illustrate universal suddenly Rayleigh Wiener infinity assumed solids 

分 类 号：O346.1[理学—固体力学] TU996.7[理学—力学]