Journal article


Modelling and computation of curing and damage of thermosets


Publication Details
Author(s): Mergheim J, Possart G, Steinmann P
Publisher: Elsevier
Publication year: 2012
Volume: 53
Journal issue: 1
Pages range: 359-367
ISSN: 0927-0256
Language: English

Abstract

The curing of thermosets is a complex process involving the transition from a fluid into a (visco-) elastic solid. This phase transition comes along with an increase in stiffness and a volume shrinkage of the polymer. The latter may lead to severe residual strains and stresses, which in turn can cause damage in the final, usually quasi-brittle material. In this contribution a constitutive model is developed which takes into account the curing of a thermosetting material together with the process-induced damage as resulting from curing shrinkage. The curing of the material is governed by a phenomenological hypoelastic constitutive equation which includes temporal evolutions for stiffness and volume shrinkage. Thermal and viscous effects are neglected in the present study. An isotropic gradient-enhanced damage model is adapted to describe the damage evolution. The curing-damage model is implemented into a finite element code and numerical examples for thermosetting materials demonstrate that the proposed model is capable to predict cure-induced damage in thermosets. © 2011 Elsevier B.V. All rights reserved.



How to cite
APA: Mergheim, J., Possart, G., & Steinmann, P. (2012). Modelling and computation of curing and damage of thermosets. Computational Materials Science, 53(1), 359-367. https://dx.doi.org/10.1016/j.commatsci.2011.09.013

MLA: Mergheim, Julia, Gunnar Possart, and Paul Steinmann. "Modelling and computation of curing and damage of thermosets." Computational Materials Science 53.1 (2012): 359-367.

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