Non-linear elastic tension–compression asymmetric anisotropic model for fibre-reinforced composite materials

Štefan Obid (Author), Miroslav Halilovič (Author), Janez Urevc (Author), Bojan Starman (Author)

Abstract

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.

Keywords

anizotropen material;konstitutivno modeliranje;metoda končnih elementov;natezno-tlačna asimetrija;bi-modularni materiali;troosnost napetostnega stanja;anisotropic material;constitutive behaviour;finite elements;tension-compression asymmetry;bi-modular materials;stress triaxiality dependency;

Data

Language:	English
Year of publishing:	2023
Typology:	1.01 - Original Scientific Article
Organization:	UL FS - Faculty of Mechanical Engineering
UDC:	519.62:620.173:539.383
COBISS:	142323971
ISSN:	1879-2197
Views:	140
Downloads:	36
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	anizotropen material;konstitutivno modeliranje;metoda končnih elementov;natezno-tlačna asimetrija;bimodularni materiali;troosnost napetostnega stanja;
Type (COBISS):	Article
Pages:	str. 1-13
Issue:	ǂVol. ǂ185
Chronology:	Apr. 2023
DOI:	10.1016/j.ijengsci.2023.103829
ID:	18051270