3D Nonlinear Parallel FEM for Analyzing Dynamic Response of the LargeScale Saturated Soil Layers-Civil Structures Interaction Problem (Part I: Formulation and its Numerical Solution)

Abstract

In this analytical study a 3D nonlinear parallel FEM algorithm was developed to overcome the physical limitation of a single processor computer when analysing the dynamic response of interaction between a large-scale saturated soil layers and civil structures. The parallel algorithm was derived based on the Domain Decomposition Method (DDM) such that a boundary value problem can be converted into an interface problem. The DDM was used to partite a whole of analytical domain into several non-overlapping subdomains. One feature of the current algorithm is most parts of the computation processes are performed in subdomain basis without interprocessor communication. The interprocessor communication is only take place when solving the interface problem. An iterative solver of the Conjugate Gradient (CG) algorithm incorporating with the interprocessor communication based on hypercube networking was used to solve it interface problem.

Keywords

• 3d nonlinear fem
• parallel computation
• domain decomposition method
• saturated soil layers-civil structure interaction problem