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Polynomial chaos representation of a stochastic preconditioner. (English) Zbl 1122.74541

Summary: A method is developed in this paper to accelerate the convergence in computing the solution of stochastic algebraic systems of equations. The method is based on computing, via statistical sampling, a polynomial chaos decomposition of a stochastic preconditioner to the system of equations. This preconditioner can subsequently be used in conjunction with either chaos representations of the solution or with approaches based on Monte Carlo sampling. In addition to presenting the supporting theory, the paper also presents a convergence analysis and an example to demonstrate the significance of the proposed algorithm.

MSC:

74S30 Other numerical methods in solid mechanics (MSC2010)
74H50 Random vibrations in dynamical problems in solid mechanics

Software:

LIPSOL

References:

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