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http://dx.doi.org/10.7842/kigas.2016.20.4.78

Simulation and Experimental Investigation of Reverse Drawing Process for Manufacture of High-Capacity Aluminum Liner  

Lee, Seungyun (Institute of Gas Safety R&D, Korea Gas Safety Corporation (KGS))
Cho, Sungmin (Institute of Gas Safety R&D, Korea Gas Safety Corporation (KGS))
Lee, Sunkyu (Institute of Gas Safety R&D, Korea Gas Safety Corporation (KGS))
Lyu, Geunjun (Institute of Gas Safety R&D, Korea Gas Safety Corporation (KGS))
Kim, Soyoung (Institute of Gas Safety R&D, Korea Gas Safety Corporation (KGS))
Kang, Sunghun (Insitute of materials R&D, Korea Institute of Materials Science(KIMS))
Publication Information
Journal of the Korean Institute of Gas / v.20, no.4, 2016 , pp. 78-84 More about this Journal
Abstract
In this work, finite element investigations were carried out to optimize reverse drawing process design for manufacture of high-capacity aluminum liner used in fuel cell vehicle. The tensile tests with aluminum alloy Al6061 annealed at $350^{\circ}C$ were carried out to obtain the flow stresses. In order to estimate more accurate flow stresses after necking, the flow stresses were estimated from the comparison of load vs. displacement curves which were obtained from experimental and simulation results of tensile tests. In case of finite element analyses of reverse drawing processes, it was focused on the effects of process designs such as punch and die designs, blank holding force, drawing ratio and the clearance between the punch and blank holder on the generation of wrinkle and fracture of the blank and partially heated punch. However, it was revealed that experimental results still show the fracture at the end of 2nd drawn cup, although partially heated punch is used. Nevertheless, the drawn cup can be used because the sufficient length of the drawn cup for the next flow forming process and spinning process was obtained.
Keywords
Finite element investigations; High-capacity aluminum liner; Reverse drawing; Process design; Ductile fracture; Partially heated punch;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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