摘要
讨论了2个不同功能梯度压电压磁带黏接界面上的反平面运动裂纹问题.在忽略界面上裂纹尖端处裂纹面相互叠入的前提下,借助积分变换技术,将所研究的问题转化为对偶积分方程;运用Copson-Sih方法将对偶积分方程变为第2类Fredholm积分方程进行求解;通过数值计算,讨论了梯度参数、运动速度以及几何比率对动应力强度因子的影响.
A moving mode Ⅲ crack at the interface between two different functionally piezoelectric piezomagnetie materials is studied in the paper. Based on the assumption that the effect of the crack surface overlapping very near the crack tips is negligible, Fourier transforms are used to reduce the problem to the solution of a pair of dual integral equations, which are then reduced to a Fredholm integral equation of second kind by Copson-Sih method. Finally, the influences of graded parameter, the moving velocity of the crack and geometrical sizeon dynamic stress intensity factor are analyzed.
出处
《宁夏大学学报（自然科学版）》
CAS
北大核心
2009年第3期227-231,共5页
Journal of Ningxia University(Natural Science Edition)
基金
国家自然科学基金资助项目(10962008
10461008)
宁夏自然科学基金项目(NZ08174
NZ09118)
宁夏高校科研基金资助项目(NG20091035)
宁夏师范学院科研基金资助项目(YB09013
YB09026)
关键词
非均匀材料
界面运动裂纹
对偶积分方程
强度因子
nonhomogeneous composite layer
moving interfacial crack
dual integral equation
intensity factor
