期刊
THEORETICAL AND APPLIED FRACTURE MECHANICS
卷 89, 期 -, 页码 127-138出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.tafmec.2017.02.002
关键词
Functionally graded material; Isogeometric analysis; NURBS; Two-variable refined plate theory
资金
- Ministry of Education, Singapore (Academic Research Fund) [TIER 1-RG174/15]
- Singapore Maritime Institute [SMI-2014-MM11]
- National Research Foundation Medium Sized Center, Singapore through the Marine and Offshore Program
The static and dynamic analysis for the functionally graded material (FGM) plate is performed by using the extended isogeometric analysis (XIGA) based on the Bezier extraction and two-variable refined plate theory (RPT). The two-variable RPT using only four parameters for the displacement fields overcomes the shear locking without the shear correction factor. The isogeometric analysis (IGA) reduces the computational cost by avoiding multiple re-meshing steps and improves the accuracy of solutions due to approximating the exact geometry. The XIGA integrating the IGA with the extended FEM is capable of the general fracture analysis. By transforming Non-Uniform Rational B-Spline control meshes to Bezier elements with the Bezier extraction operator, we can implement the IGA in the familiar FEM framework. The theory presented in this paper is verified by comparing to the solutions of other methods. The effects of the side-to-thickness ratio, aspect ratio, ingredient fraction, and crack length on the static and dynamic behavior of the FGM plate are studied. (C) 2017 Elsevier Ltd. All rights reserved.
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