An elasto-viscoplastic constitutive model for polymers at finite strains: Formulation and computational aspects

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Mirkhalaf, SM (Author) Other; F.M. Andrade Pires (Author) FEUP; Simoes, R (Author) Other

Journal

Title: Computers and Structures

Vol. 166

Pages: 60-74

ISSN: 0045-7949

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 8 Citations

Other information

Authenticus ID: P-00K-4TG

DOI: 10.1016/j.compstruc.2016.01.002

Abstract (EN): 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 15