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http://ir.ncue.edu.tw/ir/handle/987654321/13375
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題名: | Investigation into equal channel angular extrusion process of billet with internal defects |
作者: | Chen, Dyi-Cheng;Chen, Ching-Pin |
貢獻者: | 工業教育與技術學系 |
關鍵詞: | Equal channel angular (ECA) extrusion;Rigid-plastic finite element;Defective voids |
日期: | 2008-08
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上傳時間: | 2012-08-27T05:53:09Z
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出版者: | Elsevier B.V |
摘要: | The shear plastic deformation behavior of a material during equal channel angular (ECA) extrusion is governed primarily by the die geometry, the material properties, and the process conditions. This study uses the commercial DEFORM(TM) 2D (two-dimensional) rigid-plastic finite element code to investigate the plastic deformation behavior of materials with internal defective voids during 1- and 2-turn ECA extrusion processing. The present simulations investigate the damage factor distributions, the total velocity distributions, the rotation angle distributions, the void dimension, and the stress-strain distributions around the defective voids under various extrusion conditions. The mesh element increase of the billet mesh in the 2-turn ECA extrusion process is also investigated. The present numerical results provide valuable insights into the shear plastic deformation behavior of materials containing defective voids in the ECA extrusion process. |
關聯: | Journal of Materials Processing Technology, 204(1-3): 419-424 |
顯示於類別: | [工業教育與技術學系] 期刊論文
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