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A Study on the Determination of Material Property by Cylinder Compression Test

원기둥 압축 시험을 통한 소재의 물성치 평가에 관한 연구

  • 차도성 (서강대학교 대학원 기계공학과) ;
  • 최홍석 (서강대학교 대학원 기계공학과) ;
  • 김낙수 (서강대학교 기계공학과)
  • Published : 2006.09.01

Abstract

In the study, the flow stress of material and friction condition were determined by using the cylinder compression test and numerical method. We proposed the flow stress equation including the initial yield strength to predict it from the upper bound method. The upper bound technique uses the velocity field which includes two unknowns to effectively express bulging. Also, inverse engineering technique uses the object function to minimize area enclosed by load-stroke curve. The friction factor is determined from the radius of curvature of the barrel by cylinder compression test. Flow stress and initial yield strength predicted from the above techniques are verified through the finite element simulation.

Keywords

Flow Stress;Inverse Engineering;Cylinder Compression Test;Barreling;Upper Bound Method;Finite Element Method;Bulge Phenomenon

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