스프링백 특성에 영향을 미치는 수치변수의 분석을 위한 다구치 실험계획법의 응용

• 영문명: Application of the Taguchi Method to the Analysis of the Numerical Parameters Influencing Springback Characteristics
• 발행기관: 강원대학교 산업기술연구소
• 저자명: 김형종(Kim Hyung Jong) 전태보(Jeon Tae Bo)
• 간행물 정보: 『산업기술연구』vol.20, 1~8쪽, 전체 8쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2000.09.30

영문 초록

It is desirable but difficult to predict springback quantitatively and accurately for successful tool and process design in sheet stamping operations. The result of springback analysis by the finite element method (FEM) is sensitively influenced by numerical factors such as blank element size, number of integration points, punch velocity, contact algorithm, etc. In the present work, a parametric study by Taguchi method is performed in order to evaluate the influence of numerical factors which gives the best approximation to experimental data. Since springback is determined by the residual stress after forming process, it is important to evaluate stress distribution accurately. The oscillation in the time history curve of stress obtained by the dynamic-explicit finite element variability study is also carried out in this study in order to assess the stability of implicit springback analysis starting from the stress solution by explicit forming simulation. The U-draw bending process, one of the NUMISHEET ’93 benchmark problems, is adopted as an application model because it is most popular one for evaluation the springback characteristic.

목차

Abstract

1. 서론

2. U-드로벤딩 시험 및 해석

3. 실험 설계

4. 실험결과 및 분석

5. 결론

참고문헌

키워드

스프링백 외연적 유한요소법 응력변동성 다구치 법 springback explicit finite element method stress variability Taguchi method