摘要
从应力平衡方程、电场Maxwell方程和尖劈边界条件构成的控制方程出发,导出一个基于位移场、电势的弱式方程.采用一维有限元分析技术,沿着尖劈端部领域进行单元离散,建立求解压电复合材料尖劈附近奇性场问题的有限元特征分析方法.对于压电材料非常重要的电学边界问题,本文也有所涉及,并给出了平面导电裂纹和绝缘裂纹的算例.
Based on stress equilibrium, electric field equation and boundary conditions, a one dimensional finite element procedure is proposed to determine singularities in around a wadge piezoelectric materials with dividing elements along their perimeters. This paper discusses the singular stress and electric displacement angular functions around a crack tip under conducting and impermeable conditions on the crack surfaces. The approach is validated by comparing its predictions with other available theoretical solutions.
出处
《华东交通大学学报》
2004年第1期1-7,共7页
Journal of East China Jiaotong University
基金
国家自然科学基金资助项目(10362002)
江西省自然科学基金资助项目(0350062)