SBFEM for fracture analysis of piezoelectric composites under thermal load. (1st January 2015)

• Record Type: Journal Article
• Authors: Li, Chao; Ooi, Ean Tat; Song, Chongmin; Natarajan, Sundararajan
• Is Part Of: International journal of solids and structures. Volume 52(2015)
• Page Start: 114
• Page End: 129
• Publication Date: 2015-01-01
• Subjects: Fracture mechanics -- Piezoelectric materials -- Thermal stresses -- SBFEM -- Stress and electric displacement intensity factors; Mechanics, Applied -- Periodicals; Structural analysis (Engineering) -- Periodicals; Elastic solids -- Periodicals; Mécanique appliquée -- Périodiques; Constructions, Théorie des -- Périodiques; Solides élastiques -- Périodiques; Elastic solids; Mechanics, Applied; Structural analysis (Engineering); Periodicals; 624.18
• DOI: 10.1016/j.ijsolstr.2014.09.020
• Languages: English
• ISSNs: 0020-7683

Abstract

Abstract: This paper extends a semi-analytical technique, the so-called scaled boundary finite element method (SBFEM), to analyze fracture behaviors of piezoelectric materials and piezoelectric composites under thermal loading. In this method, only the boundary is discretized leading to a reduction of the spatial dimension by one. The temperature field in the domain is obtained using the SBFEM and expressed as a series of power functions of the radial coordinate. The resulting stress and electric displacement distribution along the radial direction is represented analytically. This permits the generalized stress and electric displacement intensity factors to be directly evaluated from the solution by following standard stress recovery procedures in the finite element method (FEM). Numerical examples are presented to verify the proposed technique with the analytical solutions and the results from the literature. The present results highlight the accuracy, simplicity and efficiency of the proposed technique.