一维六方压电准晶狭长体中双半无限共线裂纹问题的D-B模型

Dugdale-Barenblatt Model for Two Semi-Infinite Collinear Cracks in One-Dimensional Hexagonal Piezoelectric Quasicrystals Strip

基于解析函数理论与保角映射方法,通过构造一维六方压电准晶狭长体中双半无限共线裂纹问题的D-B(Dugdale-Barenblatt)模型,研究了一维六方压电准晶狭长体中双半无限共线裂纹的弹塑性断裂力学问题,得到了塑性区尺寸及场强度因子的解析解,推广了材料中裂纹问题的已有结果,扩大了准晶压电材料弹塑性断裂力学问题的研究范围。

Based on the analytic function theory and the technique of the conformal mapping,the elastic-plastic fracture mechanics of two semi-infinite collinear cracks in one-dimensional hexagonal piezoelectric quasicrystals strip is studied by constructing a Dugdale-Barenblatt model of two semiinfinite collinear cracks in an one-dimensional hexagonal piezoelectric quasicrystals strip.In addition,the plastic zone size and the analytic solution of field intensity factor are obtained,the existing results on cracking in materials are extended,and the scope of research on the elastic-plastic fracture mechanics of quasicrystal piezoelectric materials is expanded.