20.500.12556/RUL-144403 Non-linear elastic tension–compression asymmetric anisotropic model for fibre-reinforced composite materials We present a novel constitutive model capable of describing non-linear anisotropic fibre-reinforced materials with different responses in tension and compression under a general stress state. The model is based on the original one-dimensional Ramberg–Osgood model, which is generalized to a multiaxial stress state and anisotropic material behaviour under thermodynamic requirements. To account for tension–compression asymmetry under a multiaxial stress state, the model is extended by the use of the stress triaxiality invariant as an indicator of stress state type, e.g. shear, uniaxial or biaxial tension, compression, etc. The model is implemented in ABAQUS/Explicit via the VUMAT subroutine and verified on two material datasets, which are an S2-glass/E773-epoxy and a reinforced polyester composite material. In comparison with other models, the proposed model provides an elegant formulation for the description of all the aforementioned phenomena, resulting in a simple calibration procedure based on uniaxial tensile and compressive tests. anisotropic material constitutive behaviour finite elements tension–compression asymmetry bi-modular materials stress triaxiality dependency anizotropen material konstitutivno modeliranje metoda končnih elementov natezno-tlačna asimetrija bimodularni materiali troosnost napetostnega stanja true false true Angleški jezik Slovenski jezik Članek v reviji 2023-02-20 12:55:10 2023-02-20 12:55:15 2023-09-02 03:45:44 0000-00-00 00:00:00 2023 0 0 13 str. Vol. 185, art. 103829 Apr. 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 519.62:620.173:539.383 1879-2197 10.1016/j.ijengsci.2023.103829 142323971 Obid...-Non-linear_elastic_tension–compression_asymmetric_anisotropic_model_for_fibre-reinforced_composite_materials.pdf Obid...-Non-linear_elastic_tension–compression_asymmetric_anisotropic_model_for_fibre-reinforced_composite_materials.pdf 1 38E2176C0801ED7D172F055B8815EC51 cf201cc7d66586f60e9a846449419a351b54aa2431e9449d48b7bea2215e7d7d 7ea5dae6-b115-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=166701 https://www.sciencedirect.com/science/article/pii/S0020722523000204 1 1ae91cc1-b115-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=166700 Fakulteta za strojništvo 0 0 0