Parameter identification of viscoelastic materials

Two parameter identification procedures for linear viscoelastic materials are presented. One is the method using the incremental constitutive relation for linear viscoelastic materials, and the other is the method using the elastic-viscoelastic correspondence principle. Part of back analysis in both methods is formulated based on the boundary control concept (Ichikawa Y, Ohkami T. A parameter identification procedure as a dual boundary control problem for linear elastic materials. Soils and Foundations 1992;32(2):35-44). Two numerical examples are presented to compare the efficiency of both methods. (C) 1999 Elsevier Science Ltd. All rights reserved.