Reinforced thermoplastic sheet composite deep drawing investigation

This paper covers numerical investigations of the deep drawing of a woven composite sheet into a “hat” shape, combining a hemispherical cup with a wide flat rim. A non-orthogonal constitutive model is proposed to characterize the anisotropic material behavior of woven composite fabrics under large deformation loadings. The non-orthogonal constitutive model has been developed as a set of user defined material subroutines and incorporated into commercial FEM packages, ABAQUS/Implicit (UMAT) and ABAQUS/Explicit (VUMAT) codes. A comparison of results is investigated and presented in this paper.