A Mechanical Model for Felt in Impulse Drying: A Cellular Materials Approach. I. Model Development and Simulation

• Tipo: Artigo em Revista Científica Internacional
• Data: 2008

Autores

H. Aguilar Ribeiro (Autor) FEUP; C. A. V. Costa (Autor) FEUP

Revista

Título: Fibers and Polymers

Vol. 9 Nº 1

Páginas: 55-62

ISSN: 1229-9197

Editora: KOREAN FIBER SOCIETY

Indexação

ISI Web of Science

Scopus

INSPEC

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia civil

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia química

Outras Informações

DOI: 10.1007/s12221-008-0009-1

Abstract (EN): This paper presents a physically based model of the densification of a felt in the press nip of a paper machine, running at operating conditions similar to those used in impulse drying. The model incorporates the observed features of wet felts compression such as non-linear elasticity and non-recoverable strains that are rate-dependent. A viscoelastoplastic model, based on the cellular solids theory, was developed to describe this behavior. The governing differential equations of the model were established bearing in mind an assembly of modified Maxwell elements combined in series and then arranged in parallel. This approach resulted in a three-dimensional unsteady-state problem, solved by means of an integrator based in the Gear method. The model was used to predict the evolution of thickness, elastic and viscous moduli and apparent density of the material.

Idioma: Inglês

Tipo (Avaliação Docente): Científica