National Changhua University of Education Institutional Repository : Item 987654321/13375
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题名: Investigation into equal channel angular extrusion process of billet with internal defects
作者: Chen, Dyi-Cheng;Chen, Ching-Pin
贡献者: 工業教育與技術學系 
关键词: Equal channel angular (ECA) extrusion;Rigid-plastic finite element;Defective voids
日期: 2008-08
上传时间: 2012-08-27T05:53:09Z
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
显示于类别:[工業教育與技術學系] 期刊論文

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