English  |  正體中文  |  简体中文  |  Items with full text/Total items : 6498/11670
Visitors : 25629974      Online Users : 328
RC Version 3.2 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/13377

Title: 應用有限元素法於多孔質金屬輥軋加工之研究
Study on Rolling Processes of Porous Metals Using the Finite Element Method
Authors: 陳狄成
Contributors: 工業教育與技術學系 
Keywords: 有限元素;多孔質金屬輥軋;空孔;介在物
Finite element;Porous metals rolling;Void;Inclusion
Date: 2003-08
Issue Date: 2012-08-27T05:53:15Z
Publisher: 行政院國家科學委員會
Abstract: 本 研 究 是 應 用 有 限 元 素 DEFORMTM-2D 軟體,分析輥軋加工時多 孔質金屬板材於輥隙內之變形型態。研究 的內容針對多孔質金屬板內含空孔與介在 物於輥軋中變形情形,例如分析空孔與介 在物之密度分佈、閉合行為、變形機制和 應力應變分佈等,探討板厚壓下率、內孔 尺寸大小、摩擦因子、密度大小和輥徑大 小等輥軋條件對金屬板密度分佈、內孔閉 合度與介在物發生前後空孔之影響。並且 討論多孔質金屬內含缺陷空孔之完全閉合 的臨界輥軋條件,及影響介在物前後空孔 閉合臨界壓下率的因素,再者以實驗來驗 證,模擬結果希望能提供多孔質金屬輥軋 加工之參考。
Using a finite element DEFORMTM-2D software, this study simulated plastic deformation of the porous metal sheet at the roll-gap during sheet rolling processes. This study consists of a few parts for internal void and inclusion inside the porous metal sheet during sheet rolling. Relative density distributions, closing behavior, the deformation mechanism and stress-strain distributions around internal void and inclusion inside the porous metal sheet during sheet rolling were discussed numerically. The influences of various rolling conditions, such as the thickness reduction, the dimension of the internal void, friction factor, density amounts, roll radius, etc., on the dimension of the voids at the exit were discussed. The
critical rolling conditions, over which the defective void and front and rear vacancy of inclusion would close completely, were also investigated. Theoretical predictions of the dimension of void after rolling were compared with experimental results. The simulated results can provide useful knowledge for designing the pass schedule of porous metals rolling processes.
Relation: 國科會計畫; 計畫編號:NSC92-2212-E274-005; 研究期間:92/08-93/07
Appears in Collections:[工業教育與技術學系] 國科會計畫

Files in This Item:

File SizeFormat
2030100612001.pdf64KbAdobe PDF344View/Open

All items in NCUEIR are protected by copyright, with all rights reserved.


DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback