Recent advances in finite element method for stochastic structures

Author Type

Faculty

Co-Author Type 1

Faculty

Co-Author Type 2

Outside Researcher

Co-Author Type 3

Outside Researcher

College

Engineering and Computer Science

Department

Ocean and Mechanical Engineering

Document Type

Article

Publication/Event/Conference Title

American Society of Mechanical Engineers Materials Division Publication MD

Publication Status

Version of Record

Abstract

Extensive motivation to do an additional work in the finite element method in stochastic problems (FEMSP) is discussed. The qualitative comparison of FEMSP with the state of the art of the deterministic FEM is given. These observations and thoughts are then realized in several manners. We first present the exact inverse FEMSP, which however can not serve as a general tool for stochastic analysis of complex structures. The new variational principles for stochastic beams, for the mean response function, as well as response's auto-correlation function are formulated and the FEM based on the variational principles is presented. Finally, a general non-perturbative FEM for stochastic probelms is developed, based on the element-level flexibility. It is concluded that much work needs to be done in order FEMSP to be at the level compared to that of the deterministic FEM. The advantage of the main methods presented here over the conventional ones lies in their non-perturbational nature. Numerical examples are presented.

First Page

35

Last Page

42

Publication Date

12-1-1996

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