Non-linear elastic tension–compression asymmetric anisotropic model for fibre-reinforced composite materials
ID Obid, Štefan (Author), ID Halilovič, Miroslav (Author), ID Urevc, Janez (Author), ID Starman, Bojan (Author)

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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:anisotropic material, constitutive behaviour, finite elements, tension-compression asymmetry, bi-modular materials, stress triaxiality dependency
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Publication status in journal:Published
Article version:Publisher's version of article
Number of pages:13 str.
Numbering:Vol. 185, art. 103829
PID:20.500.12556/RUL-144403 This link opens in a new window
ISSN on article:1879-2197
DOI:10.1016/j.ijengsci.2023.103829 This link opens in a new window
COBISS.SI-ID:142323971 This link opens in a new window
Publication date in RUL:20.02.2023
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Record is a part of a journal

Title:International journal of engineering science
Shortened title:Int. J. Eng. Sci.
COBISS.SI-ID:142315779 This link opens in a new window


License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

Keywords:anizotropen material, konstitutivno modeliranje, metoda končnih elementov, natezno-tlačna asimetrija, bi-modularni materiali, troosnost napetostnega stanja


Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Project number:P2-0263
Name:Mehanika v tehniki

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Project number:L2-3172
Name:Razvoj tehničnih smernic za štirislojne zasteklitve

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