期刊
INTERNATIONAL JOURNAL OF DAMAGE MECHANICS
卷 31, 期 5, 页码 645-664出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/10567895211072581
关键词
Damage; ductile fracture; wire drawing; continuum damage mechanics; Lemaitre's model
资金
- National Agency of Research and Development ANID through FONDECYT Project [1180591]
- National Agency of Research and Development ANID through scholarship program Beca Doctorado Nacional 2019 [21190205]
- DICYT-VRIDEI-USACH [DICYT 052016C_AYUDANTE]
This paper presents an experimental and numerical analysis of damage evolution in AA2011 aluminum alloy wires drawn under different scenarios. The experimental results show a bilinear damage relationship in terms of the effective plastic strain. A modification of the classical Lemaitre model is proposed to reproduce bilinear paths of damage, and its predictive capability is assessed in numerical simulations, which demonstrate good agreement with the corresponding experimental data.
This paper presents an experimental and numerical analysis of damage evolution in AA2011 aluminum alloy wires drawn under different scenarios. To this end, load-unload tensile tests were firstly carried out in order to characterize the degradation of the mechanical response in every cycle where the experimental results show a bilinear damage relationship in terms of the effective plastic strain. Therefore, a modification of the classical Lemaitre model is proposed in this work in order to reproduce bilinear paths of damage with the addition of only two parameters that can be directly obtained from the material characterization. Then, the damage predictive capability of this new experimental-based model is assessed in numerical simulations of the drawing process in one and two passes (considering for this last case the sequential and tandem configurations) where the computed predictions are compared with the corresponding experimental data showing a good agreement between them.
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