Forming Analysis of L-type Bending of Sandwich Sheet with Pyramid Core

피라미드 코어를 가진 샌드위치 판재의 L형 굽힘 성형해석

  • Lim, Sung-Jin (Department of Product Design and Manufacturing Engineering, Seoul National University of Technology) ;
  • Chung, Wan-Jin (Department of Product Design and Manufacturing Engineering, Seoul National University of Technology) ;
  • Kim, Jong-Ho (Department of Product Design and Manufacturing Engineering, Seoul National University of Technology)
  • 임성진 (서울산업대학교 금형설계학과) ;
  • 김종호 (서울산업대학교 금형설계학과) ;
  • 정완진 (서울산업대학교 금형설계학과)
  • Published : 2009.12.31

Abstract

In this study, the use of a condensed model is proposed for the simulation of forming of sandwich sheet with pyramid core. A corresponding finite element analysis for L-type bending is carried out to prove the accuracy and the effectiveness. In order to improve the accuracy of forming analysis, more precise modeling of core shape and consideration of work-hardening of previous core forming are carried out. Simulation results are compared with those of experiment. Deformation shape and post-buckling behavior by simulation are in good agreement with those of experiment for the considerable range of deformation. From the comparison of force-displacement curve, it is shown that the proposed model shows good prediction of post-buckling behavior.

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