Article (Scientific journals)
A variational-inequality approach to stochastic boundary value problems with inequality constraints and its application to contact and elastoplasticity
Arnst, Maarten; Ghanem, Roger
2011In International Journal for Numerical Methods in Engineering
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Keywords :
variational methods; probabilistic methods; finite element methods
Abstract :
[en] This paper is concerned with stochastic boundary value problems (SBVPs) whose formulation involves inequality constraints. A class of stochastic variational inequalities (SVIs) is defined, which is well adapted to characterize the solution of specified inequality-constrained SBVPs. A methodology for solving such SVIs is proposed, which involves their discretization by projection onto polynomial chaos and collocation of the inequality constraints, followed by the solution of a finite-dimensional constrained optimization problem. Simulation studies in contact and elastoplasticity are provided to demonstrate the proposed framework.
Disciplines :
Mechanical engineering
Author, co-author :
Arnst, Maarten ;  University of Southern California > Department of Civil and Environmental Engineering
Ghanem, Roger;  University of Southern California > Department of Civil and Environmental Engineering
Language :
English
Title :
A variational-inequality approach to stochastic boundary value problems with inequality constraints and its application to contact and elastoplasticity
Publication date :
2011
Journal title :
International Journal for Numerical Methods in Engineering
ISSN :
0029-5981
eISSN :
1097-0207
Publisher :
John Wiley & Sons, Inc, Chichester, United Kingdom
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 15 November 2011

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