GOALI: Formability in High Velocity Forming

最近的工作表明，与传统的准静态成形相比，高速金属成形可以显著地延长金属的拉伸距离。此外，已经开发了实用的策略来使用高速电磁成形来生产复杂的、低成本的板材部件。将这项技术应用于铝材，可以显著节省飞机制造成本，并能够以低廉的成本生产更轻的汽车结构。虽然已经确定了许多高速成形过程的控制因素，但对产生延伸性的机制几乎没有基本的了解，关于板材在高速下的成形性的数据也很少。在本程序中，应在高速成形中使用有助于基本理解的简单边界条件和与制造更相关的复杂条件来测量铝合金到失效的应变。这些实验测试将被高度仪表化，以捕获动态行为。该项目的实验结果将用于开发高速板料成形性能的模型，在预测加工能力方面将具有重要的工业应用价值。

Recent work has demonstrated that high velocity metal forming can stretch metals considerably further than traditional quasi-static forming. Further, practical strategies have been developed to use high-velocity electromagnetic forming to produce complex, low-cost sheet components. Applying this technology to aluminum can provide significant cost savings in aircraft manufacture and the ability to inexpensively produce lighter weight automotive structures. While many of the controlling factors for the high velocity forming process have been identified, there is little basic understanding of the mechanisms that produce the extended ductility and also very little data on the formability of sheet metals at the high velocities. In this program, the strains to failure of aluminum alloys shall be measured in high velocity forming using both simple boundary conditions that lend themselves to basic understanding as well as complex conditions that are more relevant to manufacturing. These experimental tests will be highly instrumented to capture the dynamic behavior. The experimental results of this GOALI project will be used to develop models of high velocity sheet metal formability, which should have significant industrial application in predicting processing capability