On the Abaqus FEA model of finite viscoelasticity

TL;DR

This paper compares the QLV and ABAQUS viscoelastic models for finite viscoelasticity, highlighting differences in dissipation rates and identifying limitations of the ABAQUS model through simple motion simulations.

Contribution

It provides a comparative analysis of QLV and ABAQUS viscoelastic models, revealing their differences and shortcomings in finite viscoelasticity simulations.

Findings

QLV and ABAQUS models show different dissipation behaviors.

ABAQUS model has specific shortcomings in certain motions.

The comparison highlights the need for improved viscoelastic modeling.

Abstract

Predictions of the QLV (Quasi-Linear Viscoelastic) constitutive law are compared with those of the ABAQUS viscoelastic model for two simple motions in order to highlight, in particular, their very different dissipation rates and certain shortcomings of the ABAQUS model.