FE-simulation of microforming processes applying a mesoscopic model☆
FE-simulation of microforming processes applying a mesoscopic model☆
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DOI：
10.1016/j.ijmachtools.2006.01.019
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发表时间：
2006-09
影响因子：
14
通讯作者：
Stefan Geißdörfer-;U. Engel;M. Geiger
中科院分区：
文献类型：
--
作者：
Stefan Geißdörfer-;U. Engel;M. Geiger
微成形领域的基础研究表明，从宏观尺度到微观尺度的缩小过程受到所谓的尺寸效应的影响，特别是关于流动应力和摩擦。因此，传统成形的工艺知识不能简单地转移到微尺度。要使用过程模拟方法规划生产过程，了解这些尺寸效应及其对成形行为的影响至关重要。为了确定尺寸效应，进行了大量的实验。随着检测到的影响数值介观模型正在开发的基础上，金属物理学的理论，以模拟微型零件的形成行为，以及发生的分散的过程中的因素。
Basic research in the field of microforming has shown that scaling down the process from macro to microscale is subjected to so-called size effects in particular concerning flow stress and friction. As a consequence, process knowledge of conventional forming could not simply be transferred to microscale. To plan production processes with process simulation methods the knowledge of these size effects and their impact on the forming behavior is essential. For the identification of the size effects a large number of experiments have been carried out. With the detected effects a numerical mesoscopic model is being developed—based on the theory of metal physics—in order to simulate the forming behavior of microparts as well as the occurring scatter of the process factors.