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首页> 外文会议>North American Manufacturing Research Conference (NAMRC), May 21-24, 2002, West Lafayette, Indiana >NUMERICAL AND EXPERIMENTAL ANALYSIS OF MINIATURE STAMPING PROCESS
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NUMERICAL AND EXPERIMENTAL ANALYSIS OF MINIATURE STAMPING PROCESS

机译：微型冲压过程的数值和实验分析

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摘要

The recent trend towards miniaturization causes an increased demand for parts with very small dimensions. The application of the metal forming technology for the production of milli-structure parts is still characterized by empirical process design or by the conventional design methodology. This milli-structure parts are classified as a component group whose size is between macro and micro scales, that is, about less than 20mm and larger than 1mm. The rectangular stamping process of these milli-parts of thin sheets has a typical phenomenon of bulk deformation because of the forming size. Miniature stamping processes enable the production of such parts with high productivity and accuracy. The stress values of the flow curve decrease with miniaturization, that is, coarse grained materials show a higher resistance against deformation, when the grain size is in the range of the sheet thickness. In this paper, miniature rectangular stamping is analyzed and designed using the finite element method and experiment. For the consideration of bulk forming effects, 8-node brick elements are used in the analysis and design of the milli-structure forming process. Also, the result of the finite element analysis is confirmed by a series of micro-structure experiments.
机译：最近的小型化趋势导致对非常小尺寸的零件的需求增加。金属成形技术在生产毫微结构零件中的应用仍然以经验过程设计或常规设计方法为特征。该毫微结构部件被分类为组件组，其大小在宏观和微观尺度之间，即大约小于20mm且大于1mm。由于成形尺寸的原因，这些微小的薄片的矩形冲压过程具有典型的整体变形现象。微型冲压工艺能够以高生产率和准确性生产此类零件。流动曲线的应力值随着尺寸的减小而减小，即，当晶粒尺寸在片材厚度范围内时，粗粒材料表现出较高的抗变形能力。本文利用有限元方法和实验对微型矩形冲压件进行了分析和设计。考虑到整体成形效果，在八角形结构成形过程的分析和设计中使用了8节点砖单元。此外，有限元分析的结果通过一系列的微结构实验得到了证实。

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