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

• Tipo: Artigo em Revista Científica Internacional
• Data: 2016

Autores

Mirkhalaf, SM (Autor) Outra; F.M. Andrade Pires (Autor) FEUP; Simoes, R (Autor) Outra

Revista

Título: Computers and Structures

Vol. 166

Páginas: 60-74

ISSN: 0045-7949

Editora: Elsevier

Indexação

ISI Web of Knowledge - 3 Citações

Scopus - 8 Citações

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 15