알루미늄 합금과 고장력 강판 접합을 위한 헬리컬 SPR의 단조공정 설계 = Forging Process Design of Helical SPR for Aluminum Alloy and High Strength Steel Sheets

다국어 초록 (Multilingual Abstract)

A self-piercing rivet(SPR) is a mechanical component for joining dissimilar materials. It is used
for joining dissimilar material sheets such as aluminum alloy and steel. The self-piercing rivet
directly pierces into sheets without drilling sheets beforehand unlike conventional rivets. However,
the self-piercing rivet occurs buckling when piercing high strength steel. Therefore, a helical SPR
which can pierce high strength steel sheet was designed. In this study, forging process was
designed for manufacturing the helical SPR and simulated by using commercial FEM code
DEFORM-3D. In the simulation of forging process for manufacturing rivet, process sequence,
formability, forging load were investigated. The suitable forging process could be designed by
comparisons of simulated results. Experimental trials have been carried out for same conditions as
simulated ones. The simulated results agreed with the experimental ones. So, the analytic approach
in this thesis is useful to save cost and time in the forging industry

목차 (Table of Contents)

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