Stochastic Finite Elements: A Spectral Approach

  • Roger G. Ghanem
  • Pol D. Spanos

Table of contents

  1. Front Matter
    Pages i-x
  2. Roger G. Ghanem, Pol D. Spanos
    Pages 1-13
  3. Roger G. Ghanem, Pol D. Spanos
    Pages 15-65
  4. Roger G. Ghanem, Pol D. Spanos
    Pages 67-99
  5. Roger G. Ghanem, Pol D. Spanos
    Pages 101-119
  6. Roger G. Ghanem, Pol D. Spanos
    Pages 121-183
  7. Roger G. Ghanem, Pol D. Spanos
    Pages 185-191
  8. Back Matter
    Pages 193-214

About this book

Introduction

This monograph considers engineering systems with random parame­ ters. Its context, format, and timing are correlated with the intention of accelerating the evolution of the challenging field of Stochastic Finite Elements. The random system parameters are modeled as second order stochastic processes defined by their mean and covari­ ance functions. Relying on the spectral properties of the covariance function, the Karhunen-Loeve expansion is used' to represent these processes in terms of a countable set of un correlated random vari­ ables. Thus, the problem is cast in a finite dimensional setting. Then, various spectral approximations for the stochastic response of the system are obtained based on different criteria. Implementing the concept of Generalized Inverse as defined by the Neumann Ex­ pansion, leads to an explicit expression for the response process as a multivariate polynomial functional of a set of un correlated random variables. Alternatively, the solution process is treated as an element in the Hilbert space of random functions, in which a spectral repre­ sentation in terms of the Polynomial Chaoses is identified. In this context, the solution process is approximated by its projection onto a finite subspace spanned by these polynomials.

Keywords

Finite Elemente evolution finite element method finite elements stochastic process

Authors and affiliations

  • Roger G. Ghanem
    • 1
  • Pol D. Spanos
    • 2
  1. 1.School of Engineering and Applied SciencesState University of New YorkBuffaloUSA
  2. 2.L.B. Ryon Chair in EngineeringRice UniversityHoustonUSA

Bibliographic information

  • DOI https://doi.org/10.1007/978-1-4612-3094-6
  • Copyright Information Springer-Verlag New York 1991
  • Publisher Name Springer, New York, NY
  • eBook Packages Springer Book Archive
  • Print ISBN 978-1-4612-7795-8
  • Online ISBN 978-1-4612-3094-6
  • About this book