Analysis of cracked functionally graded piezoelectric strip

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:50

Article

Mousavi, S. M.¹  Paavola, J.¹ 

[1] Aalto Univ, Dept Civil & Struct Engn, FI-02150 Espoo, Finland

关键词: Functionally graded piezoelectric;    Crack;    Strip;    Distributed dislocation technique;   

DOI  :  10.1016/j.ijsolstr.2013.03.038

来源: Elsevier

【 摘 要 】

The fracture behavior of a cracked strip under antiplane mechanical and inplane electrical loading is studied. A functionally graded piezoelectric strip with exponential material gradation is under consideration. The mechanical and electrical loading is combined via loading coupling factor. The problem of a graded piezoelectric strip containing a screw dislocation is solved. This solution results in stress and electric displacement components with Cauchy singularity. Based on the solution achieved for the dislocation, the distributed dislocation technique (DDT) is utilized to form any geometry of multiple cracks and analyze the behavior of a cracked strip under antiplane mechanical and inplane electrical loading. This technique is capable of the analysis of a strip with a system of interacting cracks. Several examples including strips with single crack, two straight cracks and two curved cracks are presented. (C) 2013 Elsevier Ltd. All rights reserved.

【 授权许可】

Free