A phenomenologically based damage model for textile composites with crimped reinforcement

A phenomenological damage model for textile composites with woven or braided reinforcement is presented and verified in this paper. Essential mechanical questions are clarified with regard to the dominant damage mechanisms and the definition of representative equivalent layers. Using the framework o...

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Bibliographic Details
Published in:Composites science and technology 2010, Vol.70 (1), p.81-87
Main Authors: Böhm, R., Gude, M., Hufenbach, W.
Format: Article
Language:English
Subjects:
A. Textile composites
Applied sciences
B. Non-linear behaviour
C. Damage mechanics
Composites
Damage failure criterion
Exact sciences and technology
Forms of application and semi-finished materials
Polymer industry, paints, wood
Technology of polymers
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Summary:A phenomenological damage model for textile composites with woven or braided reinforcement is presented and verified in this paper. Essential mechanical questions are clarified with regard to the dominant damage mechanisms and the definition of representative equivalent layers. Using the framework of continuum damage mechanics, damage is defined as the change of the tensor of elasticity. The initiation of damage is described using novel failure criteria based on the Failure-Mode-Concept. Damage variables and associated evolution laws are introduced to describe the subsequent degradation of the material stiffness. The capability of the proposed model is shown for woven thermoplastic composites made of hybrid glass–polypropylene yarns.
ISSN:0266-3538
1879-1050
DOI:10.1016/j.compscitech.2009.09.008