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

The nonlinear deformation and fracture of RTM6 epoxy resin is characterized as a function of strain rate and temperature under various loading conditions involving uniaxial tension, notched tension, uniaxial compression, torsion, and shear. The parameters of the hardening law depend on the strain-rate and temperature. The pressure-dependency and hardening law, as well as four different phenomenological failure criteria, are identified using a subset of the experimental results. Detailed fractography analysis provides insight into the competition between shear yielding and maximum principal stress driven brittle failure. The constitutive model and a stress-triaxiality dependent effective plastic strain based failure criterion are readily introduced in the standard version of Abaqus, without the need for coding user subroutines, and can thus be directly used as an input in multi-scale modeling of fibre-reinforced composite material. The model is successfully validated against data not ... Document type : Article de périodique (Journal article) Référence bibliographique Morelle, Xavier ; Chevalier, Jérémy ; Bailly, Christian ; Pardoen, Thomas. Mechanical characterization and modeling of the deformation and failure of the highly crosslinked RTM6 epoxy resin. In: Mechanics of Time Dependent Materials, Vol. 21, no. 3, p. 419-454 (2017) DOI : 10.1007/s11043-016-9336-6 Mechanical characterization and modeling of the deformation and failure of the highly cross-linked RTM6 epoxy resin X. P. Morellea, J. Chevaliera, C. Baillyb, T. Pardoena, F. Lania,∗ aInstitute of Mechanics, Materials and Civil Engineering, Université catholique de Louvain, Place Sainte-Barbe, n◦2, L5.02.02, 1348 – Louvain-la-Neuve, Belgium. bInstitute of Condensed Matter and Nanosciences, Université catholique de Louvain, Croix du Sud, n◦1, L7.04.02, 1348 – Louvain-la-Neuve, Belgium.

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