Multi-layer compression tests under hot forming conditions
Multi-layer compression tests under hot forming conditions
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DOI：
10.1002/srin.200606384
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发表时间：
2006-04-01
影响因子：
2.2
通讯作者：
Kopp, R
中科院分区：
文献类型：
--
作者：
Bernrath, G;Volles, R;Kopp, R
用有限元方法对成形过程进行精确模拟，需要尽可能精确地描述主流材料数据和物理边界条件。本文提出了一种确定板材在热成形条件下流动应力的方法。该值是在圆柱形多层压缩试验中确定的，到目前为止，即使在冷试验条件下，也被低估了。本文介绍了在高温条件下进行试验所需的一些特殊适应。算例表明，该方法能够为有限元模拟提供可靠的数据。
Exact simulation of forming processes using the finite element method requires as precise specification as possible of the prevailing material data and physical boundary conditions. The article presents a method of determining the flow-stress for sheet metals under hot-forming conditions. The value is determined in a cylindrical multi-layer compression test which up to now has been underestimated even for cold testing conditions. This article presents some special adaptations which are necessary for testing under high temperature conditions. The method is able to supply reliable data for FEM simulation, as is demonstrated in some examples.