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

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

Povzetek

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.

Ključne besede

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;

Podatki

Jezik:	Angleški jezik
Leto izida:	2023
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL FS - Fakulteta za strojništvo
UDK:	519.62:620.173:539.383
COBISS:	142323971
ISSN:	1879-2197
Št. ogledov:	140
Št. prenosov:	36
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	anizotropen material;konstitutivno modeliranje;metoda končnih elementov;natezno-tlačna asimetrija;bimodularni materiali;troosnost napetostnega stanja;
Vrsta dela (COBISS):	Članek v reviji
Strani:	str. 1-13
Zvezek:	ǂVol. ǂ185
Čas izdaje:	Apr. 2023
DOI:	10.1016/j.ijengsci.2023.103829
ID:	18051270