A better sheet formability test
A better sheet formability test
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更好的板材成型性测试
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
K. Narasimhan
中科院分区：
文献类型：
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作者：
M. Miles;J. L. Siles;R. Wagoner;K. Narasimhan
设计、构造了一种新的金属板材成形性试验，并用于评价几种涂层和未涂层板材。还将OSU成形性试验的结果与标准极限圆顶高度（LDH）试验和有限元模拟进行了比较。这些结果表明，即使使用相对不受控制的设备，新的测试也具有更高的重现性，更接近理想的平面应变路径，并且相对于LDH，执行时间约为五分之一。此外，使用这两种测试评估的成形性之间存在良好的相关性。应变测量和有限元模拟表明，改进是由于新的测试几何形状，它产生更稳定和可重复的平面应变状态附近的断裂位置。
A new test for sheet metal formability was designed, constructed, and used to evaluate several coated and uncoated sheet materials. Results from the OSU Formability Test were also compared with standard limiting dome height (LDH) tests and with finite element simulations. These results show that the new test is more reproducible, even using relatively uncontrolled equipment, more closely follows the desirable plane-strain path, and takes roughly one fifth of the time to perform relative to LDH. Moreover, there is good correlation between formability evaluated using the two tests. Strain measurements and finite element simulations revealed that the improvements are a result of the new test geometry, which produces more stable and repeatable plane-strain states near the fracture location.