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Incremental constitutive formulation for time dependent materials: creep integral approach

Incremental constitutive formulation for time dependent materials: creep integral approach This paper deals with the development of a mathematical approach for the solution of linear, non-ageing viscoelastic materials undergoing mechanical deformation. The formulation is derived from integral approach based on a discrete spectrum representation for the creep tensor. Finite difference integration is used to discretize the integral operators. The resulting constitutive model contains an internal state variable which represents the influence of the whole past history of stress and strain. Thus the difficulty of retaining the strain history in computer solutions is avoided. A complete general formulation of linear viscoelastic stress-strain analysis is developed in terms of increments of stresses and strains. Numerical simulations are included in order to validate the incremental constitutive equations. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Mechanics of Time-Dependent Materials Springer Journals

Incremental constitutive formulation for time dependent materials: creep integral approach

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References (29)

Publisher
Springer Journals
Copyright
Copyright © 2011 by Springer Science+Business Media, B. V.
Subject
Engineering; Mechanics; Polymer Sciences ; Characterization and Evaluation of Materials; Continuum Mechanics and Mechanics of Materials
ISSN
1385-2000
eISSN
1573-2738
DOI
10.1007/s11043-011-9135-z
Publisher site
See Article on Publisher Site

Abstract

This paper deals with the development of a mathematical approach for the solution of linear, non-ageing viscoelastic materials undergoing mechanical deformation. The formulation is derived from integral approach based on a discrete spectrum representation for the creep tensor. Finite difference integration is used to discretize the integral operators. The resulting constitutive model contains an internal state variable which represents the influence of the whole past history of stress and strain. Thus the difficulty of retaining the strain history in computer solutions is avoided. A complete general formulation of linear viscoelastic stress-strain analysis is developed in terms of increments of stresses and strains. Numerical simulations are included in order to validate the incremental constitutive equations.

Journal

Mechanics of Time-Dependent MaterialsSpringer Journals

Published: Aug 1, 2011

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