Analysis of spherical shell structure based on SBFEM
ISSN: 0264-4401
Article publication date: 4 February 2020
Issue publication date: 21 May 2020
Abstract
Purpose
The purpose of this paper is to present an accurate and efficient element for analysis of spherical shell structures.
Design/methodology/approach
A scaled boundary finite element method is proposed, which offers more advantages than the finite element method and boundary element method. Only the boundary of the computational domain needs to be discretized, but no fundamental solution is required.
Findings
The method applies to thin as well as thick spherical shells, irrespective of the shell geometry, boundary conditions and applied loading. The numerical solution converges to highly accurate result with raising the order of high-order elements.
Originality/value
The modeling strictly follows three-dimensional theory of elasticity. Formulation of the surface finite elements using three translational degree of freedoms per node is required, which results in considerably simplifying the computation. In the thickness directions, it is solved analytically, no problem of high aspect ratio arises and transverse shear locking can be successfully avoided.
Keywords
Acknowledgements
This work was supported by the National Major Scientific Research Program (Grant No. NMSRP 2016 YFB 020 1001) and National Natural Sciences Foundation of China (Grant No. 51421064). These supports are gratefully appreciated.
Citation
Lin, G., Ye, W.-B., Li, Z.-Y. and Liu, J. (2020), "Analysis of spherical shell structure based on SBFEM", Engineering Computations, Vol. 37 No. 6, pp. 2035-2050. https://doi.org/10.1108/EC-10-2019-0450
Publisher
:Emerald Publishing Limited
Copyright © 2020, Emerald Publishing Limited