Mechanical characterization and modeling of the deformation and failure of the highly crosslinked RTM6 epoxy resin

摘要: The nonlinear deformation and fracture of RTM6 epoxy resin is characterized as a function strain rate temperature under various loading conditions involving uniaxial tension, notched compression, torsion, shear. parameters the hardening law depend on strain-rate temperature. pressure-dependency law, well four different phenomenological failure criteria, are identified using subset experimental results. Detailed fractography analysis provides insight into competition between shear yielding maximum principal stress driven brittle failure. constitutive model stress-triaxiality dependent effective plastic based criterion readily introduced in standard version Abaqus, without need for coding user subroutines, can thus be directly used an input multi-scale modeling fibre-reinforced composite material. successfully validated against data not identification through full simulation crack propagation process V-notched beam test.