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Bilinear damage evolution in AA2011 wire drawing processes
International Journal of Damage Mechanics ( IF 4.2 ) Pub Date : 2022-01-16 , DOI: 10.1177/10567895211072581
Álvaro A González 1 , Marcela A Cruchaga 2 , Diego J Celentano 3
Affiliation  

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.



中文翻译:

AA2011 拉丝过程中的双线性损伤演变

本文介绍了在不同情况下拉制的 AA2011 铝合金线的损伤演变的实验和数值分析。为此,首先进行了加载 - 卸载拉伸试验,以表征每个循环中机械响应的退化,其中实验结果显示有效塑性应变方面的双线性损伤关系。因此,在这项工作中提出了对经典 Lemaitre 模型的修改,以便通过添加仅可以从材料表征中直接获得的两个参数来重现双线性损伤路径。然后,

更新日期:2022-01-16
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