PRESSURE ETIMATION IN HDROFORMING OF SHEET METALS USING THE UPPER BOUND TECHNIQUE

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ASEMPOUR A.; EMAMI MOHAMMAD REZA

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Journal: Sharif Journal of Civil Engineering Year:2007 | Volume:NEW SERIES (23) | Issue:37 Page(s): 71-79

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Title

PRESSURE ETIMATION IN HDROFORMING OF SHEET METALS USING THE UPPER BOUND TECHNIQUE

Author(s)

ASEMPOUR A. | EMAMI MOHAMMAD REZA | Issue Writer Certificate

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Abstract

The hydroforming process is one of the processes in metal forming technology which was originally used to form hollow pieces under pressure of a fluid. The basic parameter in this process is the pressure control of the fluid. This paper deals with the process of hydroforming of a pair of metal sheets. After obtaining the cinematically admissible velocity field, the pressure equation is obtained by an upper bound analysis. The effects of the parameters of work-hardening, friction, blank size and stretch condition in the die cavity have been taken into consideration. The pressure estimation equation obtained for each geometrical type can be applied, if the instantaneous geometry of the sheet in the die cavity zone can be analytically expressed. To validate the results of this work, a hemispherical part, formed in the hydroforming of a single sheet process, has been considered. The results obtained by this analysis have been compared with the published experimental results.

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APA: Copy

ASEMPOUR, A., & EMAMI, MOHAMMAD REZA. (2007). PRESSURE ETIMATION IN HDROFORMING OF SHEET METALS USING THE UPPER BOUND TECHNIQUE. SHARIF: CIVIL ENINEERING, NEW SERIES (23)(37), 71-79. SID. https://sid.ir/paper/128016/en

Vancouver: Copy

ASEMPOUR A., EMAMI MOHAMMAD REZA. PRESSURE ETIMATION IN HDROFORMING OF SHEET METALS USING THE UPPER BOUND TECHNIQUE. SHARIF: CIVIL ENINEERING[Internet]. 2007;NEW SERIES (23)(37):71-79. Available from: https://sid.ir/paper/128016/en

IEEE: Copy

A. ASEMPOUR, and MOHAMMAD REZA EMAMI, “PRESSURE ETIMATION IN HDROFORMING OF SHEET METALS USING THE UPPER BOUND TECHNIQUE,” SHARIF: CIVIL ENINEERING, vol. NEW SERIES (23), no. 37, pp. 71–79, 2007, [Online]. Available: https://sid.ir/paper/128016/en

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