Author:
Messai Hala,Meziani Salim,Fouathia Athmane
Abstract
Purpose
The purpose of this paper is to highlight the performance of the Chaboche model in relation to the database identification, tests with imposed deformations were conducted at room temperature on 304L stainless steel specimens.
Design/methodology/approach
The first two tests were performed in tension-compression between ±0.005 and ±0.01; in the third test, each cycle is composed of the combination of a compression tensile cycle between ±0.01 followed by a torsion cycle between ±0.01723 (non-proportional path), and the last, uniaxial ratcheting test with a mean stress between 250 MPa and −150 MPa. Several identifications of a Chaboche-type model were then performed by considering databases composed of one or more of the cited tests. On the basis of these identifications, the simulations of a large number of ratchet tests in particular were carried out.
Findings
The results present the effect of the optimized parameters on the prediction of the behavior of materials which is reported in the graphs, Optimizations 1 and 2 of first and second tests and Optimization 4 of the third test giving a good prediction of the increasing/decreasing pre-deformation amplitude.
Originality/value
The quality of the model's predictions strongly depends on the richness of the database used for the identification of the parameters.
Subject
Electrical and Electronic Engineering,Mechanical Engineering,Mechanics of Materials,Geotechnical Engineering and Engineering Geology,Civil and Structural Engineering
Reference47 articles.
1. Fatigue crack growth versus plastic CTOD in the 304L stainless steel;Engineering Fracture Mechanics,2019
2. Armstrong, P.J. and Frederick, C.O. (1966), ''A mathematical representation of the multiaxial Bauschinger effect'', Berkeley Nuclear Laboratories, Berkely, CEGB Report no RD/B/N 731.
3. An advancement in cyclic plasticity modelling for multiaxial ratcheting simulation;International Journal of Plasticity,2002
4. Multiscale analysis of the pre-hardening effect on the cyclic behavior and fatigue life of 304L stainless steel;Materials Science and Engineering: A,2016
5. Constitutive equations for cyclic plasticity and cyclic viscoplasticit;International Journal of Plasticity,1989