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International Conference of International Association for Computer Methods and Advances in Geomechanics (IACMAG)
 

Summary: The 12
th
International Conference of
International Association for Computer Methods and Advances in Geomechanics (IACMAG)
1-6 October, 2008
Goa, India
The Effects of Geotechnical Material Properties on the
Convergence of Iterative Solvers
C.E. Augarde, R.S. Crouch, T. Li
School of Engineering, Durham University, UK
A. Ramage
Dept of Mathematics, Strathclyde University, UK
Keywords: finite element analysis, iterative solvers, preconditioners
ABSTRACT: There is increasing interest in the use of iterative rather than direct solvers for geotechnical finite
element analysis. For large 3D problems iterative solvers offer the only possibility of economical solution on a
desktop PC. The major stumbling block with iterative solvers is ensuring fast convergence to a suitably accurate
solution. The system of equations is always "preconditioned" to improve convergence and the design of
preconditioners is a current hot topic in many areas of computational engineering. Effective preconditioning for
geotechnical FE is particularly difficult due to (a) the wide range of elasto-plastic constitutive models used and (b)
the changing nature of the equations during analysis (due to development of zones of plasticity for instance). In

  

Source: Augarde, Charles - School of Engineering, University of Durham

 

Collections: Engineering