Details
| Original language | English |
|---|---|
| Pages (from-to) | 25-50 |
| Number of pages | 25 |
| Journal | Computers, Materials and Continua |
| Volume | 16 |
| Issue number | 1 |
| Publication status | Published - 2010 |
Abstract
In this article, a constitutive formulation of a transversely-isotropic material and failure model for fiber-reinforced polymers is presented comprising pre-failure material nonlinearities, a novel invariant based quadratic failure criterion (IQC) as well as post failure material softening. The failure surface of the IQ criterion is assumed to take the influence of triaxiality on fracture into account. Further, a distinction between fiber failure and inter-fiber failure is conducted. Material softening is governed by a fracture energy formulation and the introduction of an internal length. The constitutive model is implemented into a programming user interface of the commercial finite element program Abaqus. As results, different laminate lay-ups are modelled and exposed to different stress states in an FE analysis. The obtained failure surfaces and stress strain curves for each laminate lay-up are compared to experimental data. As further applications of the material model presented, a curved composite beam, showing delamination, and a 0̊/90̊/0̊-rod, showing the characteristic damage state in the 90̊layer, are simulated and compared to tests.
Keywords
- Failure, Fracture energy, Shear nonlinearities, Transverse isotropy
ASJC Scopus subject areas
- Materials Science(all)
- Biomaterials
- Mathematics(all)
- Modelling and Simulation
- Engineering(all)
- Mechanics of Materials
- Computer Science(all)
- Computer Science Applications
- Engineering(all)
- Electrical and Electronic Engineering
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In: Computers, Materials and Continua, Vol. 16, No. 1, 2010, p. 25-50.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Invariant Based Transversely-Isotropic Material and Failure Model for Fiber-Reinforced Polymers
AU - Vogler, M.
AU - Ernst, G.
AU - Rolfes, R.
PY - 2010
Y1 - 2010
N2 - In this article, a constitutive formulation of a transversely-isotropic material and failure model for fiber-reinforced polymers is presented comprising pre-failure material nonlinearities, a novel invariant based quadratic failure criterion (IQC) as well as post failure material softening. The failure surface of the IQ criterion is assumed to take the influence of triaxiality on fracture into account. Further, a distinction between fiber failure and inter-fiber failure is conducted. Material softening is governed by a fracture energy formulation and the introduction of an internal length. The constitutive model is implemented into a programming user interface of the commercial finite element program Abaqus. As results, different laminate lay-ups are modelled and exposed to different stress states in an FE analysis. The obtained failure surfaces and stress strain curves for each laminate lay-up are compared to experimental data. As further applications of the material model presented, a curved composite beam, showing delamination, and a 0̊/90̊/0̊-rod, showing the characteristic damage state in the 90̊layer, are simulated and compared to tests.
AB - In this article, a constitutive formulation of a transversely-isotropic material and failure model for fiber-reinforced polymers is presented comprising pre-failure material nonlinearities, a novel invariant based quadratic failure criterion (IQC) as well as post failure material softening. The failure surface of the IQ criterion is assumed to take the influence of triaxiality on fracture into account. Further, a distinction between fiber failure and inter-fiber failure is conducted. Material softening is governed by a fracture energy formulation and the introduction of an internal length. The constitutive model is implemented into a programming user interface of the commercial finite element program Abaqus. As results, different laminate lay-ups are modelled and exposed to different stress states in an FE analysis. The obtained failure surfaces and stress strain curves for each laminate lay-up are compared to experimental data. As further applications of the material model presented, a curved composite beam, showing delamination, and a 0̊/90̊/0̊-rod, showing the characteristic damage state in the 90̊layer, are simulated and compared to tests.
KW - Failure
KW - Fracture energy
KW - Shear nonlinearities
KW - Transverse isotropy
UR - http://www.scopus.com/inward/record.url?scp=77955640584&partnerID=8YFLogxK
U2 - doi:10.3970/cmc.2010.016.025
DO - doi:10.3970/cmc.2010.016.025
M3 - Article
AN - SCOPUS:77955640584
VL - 16
SP - 25
EP - 50
JO - Computers, Materials and Continua
JF - Computers, Materials and Continua
SN - 1546-2218
IS - 1
ER -