The tress Analysis in the Fine-blanking deformation zone by the application of the FEM

유한요소법을 이용한 정밀진단 변형부의 응력해석

  • 오환섭 (조선대학교 대학원 기계공학과)
  • Published : 1999.12.01

Abstract

The goal of this study is to analyse the stress and the strain occurring within the work piece at the fine-blanking process and hence to assume the size direction and a distribution chart of the shearing stress as the penetration of the punch is being increased trough the application of the FEM. For this analysis we introduced the piece-wise linear method in the non linear structural analysis program for large deformation sheet metal forming and we defined it as the problem of the non linear contact. Therefore we modeled the above problems as quadratic-nodded axi-symmetrical elements for the character-istics of the work piece. From the result of this analysis it was found that the shearing stress is a great deal occurred on the surface of the work piece during the beginning process of the punch penetration and it's effect is expected to influence importantly for the formation of burnish because the deeper is the penetration of the punch in the narrow clearance zone. the greater is the degree of the strain stress.

Keywords

References

  1. 論文集 前田禎三
  2. Journal of the JSTP v.33 no.383 An Applicatson of Visioplasticity to the Analysis of shearing phenomenin N. Koga
  3. JSTP v.36 no.418 Numerical Analysis of shearing of sheet Metal by Particle Flow Model T.Takemasu
  4. ABAQUS/Theory Menual(Ver 5.5)
  5. 日本塑性加工學會誌 v.35 no.396 日本塑性加工學會
  6. 金屬加工學 加健三
  7. The Potential of the Fine-Blanking Technigue K. Lange
  8. Mathmatical programming Methods in Structural Plasticity no.299 D. Lloyd Smith
  9. Finite Element Procedurs for contactimpact problems Z.H. Zhong