Tool Design in a Multi-stage Rectangular Cup Drawing Process with the Large Aspect Ratio by the Finite Element Analysis - Ironing Analysis and Experimental Verifications

유한요소해석을 이용한 세장비가 큰 직사각컵 다단계 성형공정의 금형설계 - 아이어닝 해석과 실험적 검증

Examination of the die design is carried out for a multi-stage rectangular cup drawing process with the large aspect ratio with the aid of the finite element analysis. The analysis considers the deep drawing process with the ironing process for the thickness control in the cup wall. Simulation is performed to investigate the deformation mechanism in the initial design and the modified design. The analysis clarifies that the irregular cross section and the irregular contact condition produces unfavorable deformation. The analysis results show that the modified design improves the quality of a deep-drawn product with the low possibility of failure. The analysis result also shows good agreement with the experimental one.