Engineering Transactions, 55, 2, pp. 115–128, 2007

Modelling of Continuum Damage for Application Elasto-Viscoplastic Bodner-Partom Constitutive Equations

Gdańsk University of Technology Faculty of Civil and Environmental Engineering Department of Structural Mechanics and Bridge Structures

The aim of the paper is to propose an application of the continuum damage model proposed
by Lemaitre to the elasto-viscoplastic constitutive equations of the Bodner–Partom model.
The proposed approach has been implemented into subroutines of the FE code MSC.Marc as
the user’s viscoplastic subroutine UVSCPL and has been used to perform the FE numerical
simulations. Comparison is given of the following two variants: 1) uniaxial creep test results
for a nickel-based B1900+Hf superalloy at high temperatures and 2) calculation based on the
constitutive equations with the inclusion of isotropic damage models.
Keywords: elasto-viscoplastic, Bodner–Partom, damage, FEM
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