中心裂纹压电材料板的断裂问题分析  

Fracture Analysis of Piezoelectric Materials with Centric Cracks

作　　者：戴文芳[1] 金延中[1] 曹宗杰[1] 

机构地区：[1]空军航空大学航空机械工程系,吉林长春130022

出　　处：《吉林工程技术师范学院学报》2009年第7期74-77,共4页Journal of Jilin Engineering Normal University

摘　　要：根据裂纹附近广义位移场的局部解,构造了一种新的关于含中心裂纹压电材料广义位移模式并建立了有限元断裂分析模型,建立了含中心裂纹损伤压电材料结构有限元方程,提出了求解压电材料含中心裂纹广义强度因子等断裂参量的数值计算方法。数值算例说明本文方法有效。This paper is armed at a method that can calculate the general intensity factors of piezoelectric materials with a centric crack. The local solution of displacement fields in a centric crack of piezoelectric materials is used to construct a singular element. A method to compute general intensity factors of crack problems of piezoelectric materials is proposed. The general intensity factor can be solved directly with the present method without any post - processing. Numerical examples of the application of the present method are given to illustrate the validity of the present method.

关 键 词：压电材料 奇异元 强度因子 裂纹 

分 类 号：TH114[机械工程—机械设计及理论]