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이종재료 접합을 위한 나선을 갖는 Self-Piercing Rivet의 단조공정 설계
조해용(Hae Yong Cho),김동범(Dong Bum Kim),김원영(Won Yeong Kim),신혁수(Hyuk Soo Sin),이인환,이제훈(Je Hoon Lee),전병철(Byung Chul Jeon),박남기(Nam Ki Park) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.11
Self-piercing rivet is sheet joining method. It is being used more to join aluminum sheets. SPR(Self-piercing rivet) is joining method that does pierce sheet and joining it at once. It is benefit to joining limited types of materials such as automobile body combination. Unlike conventional SPR, SPR with helical ribs combined with pierced sheets by rotating. Therefore, the SPR with helical ribs can be predicted for high joining strength and shearing strength than existing rivet. In this study, the forging process was designed for manufacturing self-piercing rivet. Forging process has been simulated by using commercial FEM code DEFORM-3D. The suitable forging process could be designed by comparisons of simulation results. The simulated results for forging process were confirmed by experimental trials with the same condition.
AutoLISP언어를 이용한 금속 벨로우즈 설계 프로그램 개발
조해용 ( Hae Yong Cho ),방경철 ( Jing Zhe Fang ),이인환 ( In Hwan Lee ),김관우 ( Kwan Woo Kim ),신혁수 ( Hyuk Soo Sin ),김원영 ( Won Yeong Kim ) 충북대학교 산업과학기술연구소 2012 산업과학기술연구 논문집 Vol.26 No.1
A design program for diaphragm of three kinds of welded metal bellows was developed in this paper. Metal bellows is widely used in vacuum, semiconductor, petrochemical, instrumental, medical and aerospace applications. It has good hermetically sealed, flexible and temperature resilient device. Following the current, the effective of shpe design for metal bellows is needed. According to the principle, it is developed an automatic design system for a bellows. The design program was written in AutoLISP language on the AutoCAD system. If a user inputs design variables, such as initial radius, inner and outer diameters, pitch, thickness of plate and land length, the diaphragm is automatically designed. User could also select the type of bellows which one`s need.