http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
원주방향 분할 및 반경방향 예압 금형의 3차원 구조해석
김민철(M. C. Kim),강신준(S. J. Kang),손요헌(Y. H. Son),윤덕재(D. J. Yoon),전만수(M. S. Joun) 한국소성가공학회 2011 한국소성가공학회 학술대회 논문집 Vol.2011 No.10
In this paper, an application-oriented approach to analyze deformation and stress of the forging die with circumferentially split die inserts and shrink rings is proposed. An iterative scheme is employed to achieve the converged solution that has no node with tensile force on the circumferential split face. An example of a bolt forging process is selected to apply the approach. The application example shows that improper preload can make the die structural design even worse that the one-piece die insert, emphsizing the importance of die structural optimization especially for the split die insert.
나사 전조공정 해석모델에 제안 및 화산 모양의 변형형상의 예측
이민철(M. C. Lee),장수진(S. J. Jang),한승상(S. S. Han),손요헌(Y. H. Son),윤덕재(D. J. Yoon),전만수(M. S. Joun) 한국소성가공학회 2010 한국소성가공학회 학술대회 논문집 Vol.2010 No.5
In this paper, three-dimensional finite element analysis of screw rolling process of a 12 point flange head bolt is conducted using a rigid-plastic finite element method based metal forming simulator AFDEX 3D. An analysis model is proposed to carry out detailed simulation of thread formation, especially prediction of volcano shape crest. The model is composed of a slice of material, two artificial symmetric planes, and two tapered or flat thread rolling dies. It is applied to a thread rolling process of the 12 point flange bolt with multi-thread and small pitch and depth and the formation of thread including the volcano shape crest is revealed in detail.