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논문 기본 정보
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- 학위논문
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- 전만수
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- 2019
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이 논문의 연구 히스토리 (3)
2019
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초록· 키워드
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In this paper, finite element analysis of an automatic five-stage precision cold forging process of a yoke, a steering parts of a passenger’s car, is conducted with emphasis on springback analysis at the yoke-forming stage and its experimental verification is made. An elastoplastic finite element method with MINI-element
technique employed for the analysis of the entire process is explained. It is emphasized that the thin film of material formed between the punch and die in the stage may cause some error especially in elastoplastic finite element analysis of springback because of frequent remeshing. The numerical robustness of the springback analysis with respect to remeshing is thus first shown through investigation into its effect on the predicted springback. Experiments are carried out for comparison in terms of displacement due to springback with the predictions, revealing that they are in a qualitative agreement with each other.
technique employed for the analysis of the entire process is explained. It is emphasized that the thin film of material formed between the punch and die in the stage may cause some error especially in elastoplastic finite element analysis of springback because of frequent remeshing. The numerical robustness of the springback analysis with respect to remeshing is thus first shown through investigation into its effect on the predicted springback. Experiments are carried out for comparison in terms of displacement due to springback with the predictions, revealing that they are in a qualitative agreement with each other.
목차
Ⅰ. 서 론 1Ⅱ. 탄소성 유한요소법 4Ⅲ. 요크의 유한요소해석 및 검증 9Ⅳ. 스프링백 요인 분석 28Ⅳ-1. 압출 각도별 스프링백 분석 28Ⅳ-2. 성형 반경별 스프링백 분석 33Ⅴ. 결 론 39참고문헌 40
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