使用 DIC 结合偏差积分法估算高强度钢的 Cowper-Symonds 参数

IF 2.6 3区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Metals Pub Date : 2024-08-31 DOI:10.3390/met14090992
Andrej Škrlec, Branislav Panić, Marko Nagode, Jernej Klemenc
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引用次数: 0

摘要

对商业名称为 SZBS800 的复相高强度钢进行了 Cowper-Symonds 参数估计。参数估计基于一系列常规拉伸试验和非常规高应变率试验。参数估计采用逆向工程方法。数值模拟采用 LS-Dyna,材料响应采用片断线性塑性模型和 Cowper-Symonds 材料模型的粘塑性配方。成本函数采用响应曲面建模,并使用实值遗传算法估算最佳参数。本文的主要创新点在于定义了一个成本函数,用于测量平板状试样的变形几何形状与数值模拟结果之间的偏差。结果与相关文献进行了比较。对我们的结果和参考文献进行批判性评估是本文的另一项创新。
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Estimating the Cowper–Symonds Parameters for High-Strength Steel Using DIC Combined with Integral Measures of Deviation
Cowper–Symonds parameters were estimated for the complex-phase high-strength steel with a commercial name of SZBS800. The parameter estimation was based on a series of conventional tensile tests and unconventional high-strain rate experiments. The parameters were estimated using a reverse engineering approach. LS-Dyna was used for numerical simulations, and the material’s response was modelled using a piece-wise linear plasticity model with a visco-plastic formulation of the Cowper–Symonds material model. A multi-criteria cost function was defined and applied to obtain a response function for the parameters p and C. The cost function was modelled with a response surface, and the optimal parameters were estimated using a real-valued genetic algorithm. The main novelty and innovation of this article is the definition of a cost function that measures a deviation between the deformed geometry of the flat plate-like specimens and the results of the numerical simulations. The results are compared to the relevant literature. A critical evaluation of our results and references is another novelty of this article.
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来源期刊
Metals
Metals MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING
CiteScore
4.90
自引率
13.80%
发文量
1832
审稿时长
1.5 months
期刊介绍: Metals (ISSN 2075-4701) is an open access journal of related scientific research and technology development. It publishes reviews, regular research papers (articles) and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Metals provides a forum for publishing papers which advance the in-depth understanding of the relationship between the structure, the properties or the functions of all kinds of metals.
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