An elasto-viscoplastic constitutive model for polymers at finite strains: Formulation and computational aspects
Artikel i vetenskaplig tidskrift, 2016

This paper describes a finite strain elasto-viscoplastic constitutive model to predict the non-linear behaviour of polymeric based materials. The theoretical basis of the material model and the computational treatment are presented. The operator split methodology and the Newton-Raphson method are used to derive the state update algorithm and to obtain the numerical solution. The integration algorithm reduces to the solution of only one scalar non-linear equation. A closed formula for the corresponding consistent tangent operator is presented. Different aspects of the constitutive model and its integration algorithm are investigated by considering a comprehensive set of numerical examples.

Författare

Mohsen Mirkhalaf

Universidade do Porto

Francisco Pires

Universidade do Porto

Ricardo Simoes

Universidade do Minho

Computers and Structures

0045-7949 (ISSN)

Vol. 166 60-74

Ämneskategorier

Teknisk mekanik

Byggproduktion

Tillförlitlighets- och kvalitetsteknik

DOI

10.1016/j.compstruc.2016.01.002

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2021-04-09