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Contribution Analysis Using Shape Simplification Method for Casting Structure Shrinkage

주조 구조물 수축공의 형상단순화 기법을 통한 정적하중에 대한 영향도 분석

  • 곽시영 (한국생산기술연구원 사이버설계센터) ;
  • 임채호 (한국생산기술연구원 사이버설계센터) ;
  • 백재욱 (한국델파이주식회사)
  • Published : 2009.08.01

Abstract

Most structure engineers give the casting components over-estimated factor of safety without any reasonable foundation due to the worries about the unavoidable defects such as shrinkages and porosity in castings; the engineers have little knowledge on the relation between the defect and structural behavior. And the workers in casting field also do not know how to control the defects by manufacturing; they do not know to where the defects move or until how size they reduce the defects. In this study, shrinkage defect was scanned by industrial computerized tomography instrument (CT), and subsequently was modeled to a spheroid primitive for structural analysis. Using these simplified models of shrinkage, we observed the effects of the defect on the results of the structural analysis. A commercial structural analysis code was used to do the analysis works. Considering the conclusions, it is possible to manage the shrinkages effectively in casting process and to design the products with more reliable

Keywords

Shrinkage;Casting Defect;Shape Simplification Method;Structural Analysis

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