Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/58360
Title: HYDROFORMING SHEET METAL INTO AXISYMMETRICAL SHELLS WITH DRAW-IN OF FLANGE PERMITTED.
Authors: Shang, H.M. 
Chau, F.S. 
Tay, C.J. 
Toh, S.L. 
Issue Date: Nov-1985
Source: Shang, H.M.,Chau, F.S.,Tay, C.J.,Toh, S.L. (1985-11). HYDROFORMING SHEET METAL INTO AXISYMMETRICAL SHELLS WITH DRAW-IN OF FLANGE PERMITTED.. Journal of engineering for industry 107 (4) : 372-378. ScholarBank@NUS Repository.
Abstract: In this investigation, the clamped portion of copper test specimens is allowed to be drawn slightly into the die throat when hydroformed into axisymmetrical shells. Changing the blank holding load results in different draw-in characteristics. In general, the drawing-in action affects the shape of the shell and also lowers the severity of the deformation and surface area of the deformed shell. Although the nominal thickness uniformity of shells formed with draw-in permitted is improved, the actual thickness is less uniformly distributed. Experimental results also show that, at the beginning of the forming process, the infeeding material due to draw-in is unstretched; but as deformation progresses, stretching of the infeeding material becomes necessary for attaining higher polar heights.
Source Title: Journal of engineering for industry
URI: http://scholarbank.nus.edu.sg/handle/10635/58360
ISSN: 00220817
Appears in Collections:Staff Publications

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