Development of a biaxial tensile machine for characterization of sheet metals
Development of a biaxial tensile machine for characterization of sheet metals
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DOI：
10.1016/j.jmatprotec.2012.12.005
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发表时间：
2013-06-01
影响因子：
6.3
通讯作者：
Biasutti, M.
中科院分区：
文献类型：
--
作者：
Merklein, M.;Biasutti, M.
为研究十字形试件上金属板材的各向异性塑性行为，研制了一台带平面外加载系统的独立式双轴试验机。该装置采用单螺杆驱动执行器，通过调整连杆机构的几何形状来实现负载比沿两个主方向的变化。这种设计首先将通常安装在万能拉伸试验机中的双轴位移装置的优点与独立的机器结合在一起，同时为每种类型的局限性提供了解决方案。对所用的试件进行了讨论，并通过数值模拟与文献中提出的一种重要的几何形状进行了比较。给出了实验，并将结果用于识别经典和高级屈服准则，尽管表示为屈服面。(C)2012爱思唯尔B.V.保留所有权利。
A new stand-alone biaxial testing machine with out-of-plane loading system has been developed to study the anisotropic plastic behavior of metal sheets on cruciform specimens. In this apparatus a single screw driven actuator is used and the variation of the load ratio along the two main directions is achieved by adjusting the geometry of a link mechanism. This design firstly combines the advantages of biaxial displacement devices, typically mounted in a universal tensile tester, with stand-alone machines and by at the same time providing a solution to the limitations associated with each of these types. The used specimen is discussed and compared through numerical simulations to a prominent geometry proposed in the literature. Experiments are presented and the results are implemented in identifying classical and advanced yield criteria and though represented as yield surfaces. (c) 2012 Elsevier B.V. All rights reserved.