Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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FEM Analysis on Deformation Inhomogeneities Developed in Aluminum Sheets During Continuous Confined Strip Shearing

알루미늄 판재구속전단가공에서 형성되는 불균일 변형의 유한요소해석

  • 최호준 (인하대학교 자동화공학과) ;
  • 이강노 (고려대학교 신소재공학과) ;
  • 황병복 (인하대학교 기계공학부) ;
  • 허무영 (고려대학교 재료공학부)
  • Published : 2003.02.01
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Abstract

The strain state during the continuous confined strip shearing (CCSS) based on ECAP was tackled by means of a two-dimensional FEM analysis. The deformation of AA 1100 sheet in the CCSS apparatus was composed of three distinct processes of rolling, bending and shearing. The pronounced difference in the friction conditions on the upper and lower roll surfaces led to the different variation of the strain component ${epsilon}_13$ throughout the thickness of the aluminum sheet. Strain accompanying bending was negligible because of a large radius of curvature. The shear deformation was concentrated at the corner of the CCSSchannel where the abrupt change in the direction of material flow occurred. The process variables involving the CCSS-die design and frictions between tools and strip influenced the evolution of shear strains during CCSS.

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  1. Analysis on Inhomogeneous Textures Developed in Aluminum AA 1050 Sheets during Continuous Confined Strip Shearing vol.13, pp.4, 2004, https://doi.org/10.5228/KSPP.2004.13.4.382
  2. Numerical Analysis on the Dissimilar Channel Angular Pressing by Multi-Pass Rolling vol.449-452, pp.1662-9752, 2004, https://doi.org/10.4028/www.scientific.net/MSF.449-452.101