Journal
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
Volume 101, Issue -, Pages 343-359Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.enganabound.2019.01.012
Keywords
Scaled boundary finite element method; Saturated porous media; Generalized Biot consolidation; Polyhedron; Octree
Funding
- National Key R&D Program of China [2017YFC0404904]
- National Natural Science Foundation of China [51890915, 51779034, 51608095]
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This paper presents a polyhedral scaled boundary FEM (SBFEM) to investigate three-dimensional seismic response of saturated porous media. The displacement interpolation functions and the pore-pressure interpolation functions are derived using enhanced SBFEM. The spatial discretization formula of generalized Biot equations is achieved by Galerkin method, and subsequently solved via time-domain solving approach. The proposed method can be applied directly over arbitrary polyhedron and octree grids, possessing desirable flexibility in investigating complex geometries and high-efficiency in discretization, which makes it more versatility for engineering simulation compared to traditional numerical methods. The reliability and advantages of the developed method are validated using three numerical examples.
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