WIT Press

Local And Global Analysis Of Inhomogeneous Displacement Fields For The Identification Of Material Parameters

Price

Free (open access)

Paper DOI

10.2495/CP980161

Volume

21

Pages

10

Published

1998

Size

931 kb

Author(s)

U. Benedix, U.-J. Gorke, R. Kreifiig & S. Kretzschmar

Abstract

The inverse problem of the identification of material parameters has been solved, using nonlinear deterministic optimization methods with semiana- lytical sensitivity analysis based on the implicit differentiation of the equi- librium conditions and the deformation law. An indirect analysis of dis- placements at exposed positions of a specimen, using the local integration of the deformation law, and the direct analysis of the entire displacement fields, using the Finite Element Method, are joined for the solution of the direct problem to be solved at each optimization step. The successful appli- cation of the complex method is demonstrated on the identification of the

Keywords