Fatigue crack initiation and propagation modelling using a cyclic plasticity constitutive formulation

Čanžar, Predrag and Tonković, Zdenko and Kodvanj, Janoš and Bakić, Ante and Tomičević, Zvonimir and Surjak, Martin (2010) Fatigue crack initiation and propagation modelling using a cyclic plasticity constitutive formulation. = Fatigue crack initiation and propagation modelling using a cyclic plasticity constitutive formulation. In: 18th European Conference on Fracture: Fracture of Materials and Structures from Micro to Macro Scale, ECF 2010, 30.08.-03.09. 2010., Dresden; Germany.

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Abstract

This paper presents an experimental and numerical study of the cyclic deformation and lowcycle fatigue behaviour of the aluminium alloy AlCu5BiPb-T8. The experimental program included monotonic tensile tests, symmetric and unsymmetric strain-controlled fatigue tests, ratcheting strain accumulation, fracture toughness tests, as well as fatigue crack propagation tests. Within the framework of numerical investigations an efficient algorithm for modelling of cyclic plasticity is proposed. The material model is based on multicomponent forms of isotropic and kinematic hardening variables in conjunction with von Mises yield criterion. The computational algorithm is implemented into the finite element program ABAQUS and applied to the analysis of a crack growth near the notch. The accuracy of the computational procedure is tested by comparing the computed results with the real experimental data.

Item Type: Conference or Workshop Item (Paper)
Keywords (Croatian): Computational algorithm; Computational procedures; Constitutive formulation; Cyclic deformations; Cyclic elastoplasticity; Cyclic plasticity; Experimental program; Fatigue crack initiation; Fatigue cracks; Finite element modelling; Finite element programs; Fracture toughness tests; Integration algorithm; Kinematic hardening; Low cycle fatigues; Material models; Multicomponents; Numerical investigations; Ratcheting strain; Tensile tests; Von Mises yield criterion; Algorithms; Aluminum alloys; Crack propagation; Experiments; Fatigue crack propagation; Fatigue testing; Finite element method; Fracture; Fracture mechanics; Hardening; Plasticity; Software testing; Tensile testing; ABAQUS
Subjects: TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 200 Department of Engineering Mechanics > 210 Chair of Mechanics and Strength of Materials
200 Department of Engineering Mechanics > 220 Chair of Experimental Mechanics
Indexed in Web of Science: No
Indexed in Current Contents: No
Citations SCOPUS: 0 (04.04.2016.)
Date Deposited: 16 Apr 2015 08:40
Last Modified: 04 Apr 2016 11:57
URI: http://repozitorij.fsb.hr/id/eprint/3611

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