三点弯曲压电梁跨中裂纹尖端附近的损伤场  

Damaged fields around crack-tips in piezoelectric beam under three-point bending

作　　者：董靓[1] 杨新华[1] 王乘[1] 陈传尧[1] 

机构地区：[1]华中科技大学土木工程与力学学院,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2004年第7期105-107,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目 (1 0 1 72 0 36 )

摘　　要：根据Yang等提出的压电损伤理论 ,采用有限元方法分析了三点弯曲压电梁跨中裂纹尖端附近的损伤场 ,研究了裂纹深度、外加力电载荷等因素对损伤场分布的影响规律 .研究结果表明 ,裂纹深度。Based on the theory of piezoelectric damage, damage fields around crack tips in a piezoelectric beam under three point bending were analyzed by FE method. The effects of crack length, mechanical and electric loads on the damage fields were studied. The numerical results showed that the crack length, electric field and mechanical loads had influence on the damage fields around the crack tip.

关 键 词：压电梁 裂纹 力电损伤 

分 类 号：O346.5[理学—固体力学]