Development of a Constitutive Material Model with Progressive Failure and Damage for Woven Thermoplastic Composites

摘要

This paper describes the behavior of the DuPont™ Vizilon™ thermoplasticcomposite sheet materials and matches this to composite models as implemented inAbaqus [1] and LS-DYNA [2]. The performance of the models with thecorresponding material parameters are evaluated by simulating material specimen testsand structural beam component. The results show limitations of current compositematerial models in Abaqus [1] when applied to thermoplastics. To obtain a moreaccurate description of the actual material behavior, DuPont has developed a Usermaterial model by combining both plastic deformation of the thermoplastic matrixmaterial with a more classical composite damage model for the description of the nonlinearpermanent deformation of the woven continuous fiber reinforcement. Theresults obtained with this model are presented, demonstrating accurate predictionresults and the potential of this model for thermoplastic composites.