A Parameter Identification Procedure as a Dual Boundary Control Concept for Wave-Propagation Problem

Abstract

In geotechnical engineering, the material identification is an essential technology not only for the geological survey but also for the observational construction procedure. We have presented a generalized material parameter identification theory which is based on a boundary control concept using duality of displacement and force, and is applied to the linear elastic, viscoelastic and damage mechanics problems (Ichikawa and Ohkami 1992, Ohkami and Ichikawa 1992, Ohkami 1991). The finite element discretization and the Newton’s iteration scheme are used for solving the nonlinear problem. We here apply the same dual boundary control concept for the wave propagation problem, and identify the material parameters in a frequency domain.