Frontiers of Structural and Civil Engineering
>> 2019,
Volume 13,
Issue 1
doi:
10.1007/s11709-018-0472-8
RESEARCH ARTICLE
Numerical investigation of circle defining curve for two-dimensional problem with general boundaries using the scaled boundary finite element method
1. Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University, Thailand
2. Faculty of Civil Engineering, Ho Chi Minh City of Technology and Education, VietNam |
Accepted: 2018-04-19
Available online: 2019-01-04
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Abstract
The scaled boundary finite element method (SBFEM) is applied to the static analysis of two dimensional elasticity problem, boundary value problems domain with the domain completely described by a circular defining curve. The scaled boundary finite element equations is formulated within a general framework integrating the influence of the distributed body force, general boundary conditions, and bounded and unbounded domain. This paper investigates the possibility of using exact geometry to form the exact description of the circular defining curve and the standard finite element shape function to approximate the defining curve. Three linear elasticity problems are presented to verify the proposed method with the analytical solution. Numerical examples show the accuracy and efficiency of the proposed method, and the performance is found to be better than using standard linear element for the approximation defining curve on the scaled boundary method.
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