An experimental and numerical investigation of different shear test configurations for sheet metal characterization
An experimental and numerical investigation of different shear test configurations for sheet metal characterization
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DOI：
10.1016/j.ijsolstr.2013.12.006
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发表时间：
2014-03
影响因子：
3.6
通讯作者：
Qing Yin;B. Zillmann;S. Suttner;G. Gerstein;M. Biasutti;A. Tekkaya;M. Wagner;M. Merklein
中科院分区：
文献类型：
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作者：
Qing Yin;B. Zillmann;S. Suttner;G. Gerstein;M. Biasutti;A. Tekkaya;M. Wagner;M. Merklein
简单剪切试验广泛用于材料表征，特别是金属板材，以实现大变形而不发生塑性失稳。这项工作描述了三种不同的剪切试验，金属板，以提高知识的剪切条件下的材料行为。测试设置在样本几何结构和夹具方面有所不同。本研究比较了Miyauchi提出的根据ASTM标准样本的剪切测试装置以及面内扭转测试。每个测试的数字图像相关测量的实验应变分布的详细分析进行了讨论。进行有限元模拟，以评估试样的几何形状上的剪切区的应力分布的效果。当使用类似的应变测量和评估方案时，实验宏观流动应力与应变行为没有显示出试样几何形状的显著影响。在剪切区的应力分布方面的微小差异，可以检测到的数值结果。这项工作试图给出一个独特的概述和最常用的剪切试验的金属板材表征的详细研究。它还提供了关于每个测试的适用性的信息，以观察剪切应力下的材料行为，以期为有限元模拟的材料建模。
Simple shear tests are widely used for material characterization especially for sheet metals to achieve large deformations without plastic instability. This work describes three different shear tests for sheet metals in order to enhance the knowledge of the material behavior under shear conditions. The test setups are different in terms of the specimen geometry and the fixtures. A shear test setup as proposed by Miyauchi, according to the ASTM standard sample, as well as an in-plane torsion test are compared in this study. A detailed analysis of the experimental strain distribution measured by digital image correlation is discussed for each test. Finite element simulations are carried out to evaluate the effect of specimen geometries on the stress distributions in the shear zones. The experimental macroscopic flow stress vs. strain behavior shows no significant influence of the specimen geometry when similar strain measurements and evaluation schemes are used. Minor differences in terms of the stress distribution in the shear zone can be detected in the numerical results. This work attempts to give a unique overview and a detailed study of the most commonly used shear tests for sheet metal characterization. It also provides information on the applicability of each test for the observation of the material behavior under shear stress with a view to material modeling for finite element simulations.