A phenomenologically based damage model for textile composites with crimped reinforcement

• Published in: Composites science and technology Vol. 70; no. 1; pp. 81 - 87
• Main Authors: Böhm, R., Gude, M., Hufenbach, W.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 2010; Elsevier
• 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; B. Non-linear behaviour; Damage failure criterion; C. Damage mechanics; A. Textile composites; Strengthening; Experimental test; Fracture mechanics; Laminate; Propylene polymer; Fiber reinforced material; Theoretical study; Mechanical properties; Tensile property; Mineral fiber; Modeling; Composite material; Phenomenological model; Glass fiber fabric; Olefin polymer; Numerical simulation; Continuum mechanics; Woven material; Fracture mode; Damaging
• ISSN: 0266-3538; 1879-1050
• DOI: 10.1016/j.compscitech.2009.09.008

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.