A Moving Strip Yield Crack in a Piezoelectric Material Under in-plane Loading

摘要：

　　In this paper we extend the concept of Dugdale crack model and Yoffe crack model to propose a moving strip yield crack model,and the problem of crack propagation in piezoelectric material under electro-mechanical loading is investigated considering the electro-mechanical nonlinearity.It is assumed that the crack surfaces are electrically permeable.Fourier transform is applied to reduce the mixed boundary value problem of the crack to dual integral equations,which are solved exactly.The explicit expression of the size of the yield strip is derived and the crack opening displacement has been obtained.Our result shows that the both the stress and electric field in the cracked piezoelectric material are finite.When the crack moving velocity is zero,the static strip yield crack problem is recovered.

关键词： Piezoelectric Material Moving Strip Yield Crack Fourier Transform Dual Integral Equations Crack Opening Displacement.

作者: Zengtao CHEN Keqiang HU

作者单位: Department of Mechanical Engineering,University of New Brunswick,Fredericton,NB,E3B 5A3,Canada

会议类型: 国际会议

会议名称: The 5th International Conference on Mechanical Engineering and Mechanics(第五届国际机械工程与力学会议)

会议地点: 江苏扬州

会议语种:英文

页码: 36-41

在线出版日期: 2014-08-21（万方平台首次上网日期，不代表论文的发表时间）