A Study on the Sheet Metal Forming and the Plastic Deformation Characteristic by Using PAM-STAMP

J. Ocean Eng. Technol. 1999;13(1):29-38.

Kang, Dae-Min;

PAM-STAMP를 이용한 박판성형성 및 소성변형 특성에 관한 연구

강대민;

부경대학교 기계자동차공학부;

Keywords: Sheet Metal Forming, Plasticity Deformation, Moire Method, Finite Element Method, Instability Condition

핵심용어: 판재성형, 소성 변형, 모아레 법, 유한요소법, 불안정 조건

Abstract

In this paper the forming simulation of circular bulge by using PAM-STAMP has been performed to estimate the sheet metal forning and the plastic deformation characteristic of circular bulge. The uniaxial tension tests adn bulge tests are carried out for studying the forming characteristics of materials, and also Moire experiment are carried out for measuring the radius of curvature of the bulge and the polar compressive thickness strain. In order to compare the simulation results with the experiment and Hills theory, the relationships between redius of curvature adn polar height of the bulge, between hydraulic pressure and polar height, and between polar compressive thickness strain and polar height, are used. According to this study, the results of simulation and Hills theory are good agreement to the experiment. So, the results of simulation by using PAM-STAMP and Hills theory will give engineers good information to assess the formagbility and plastic deformation characteristic of hydraulic circular bulge test.