Research Papers

Double-Direction Pressure Distributions Generated by Vaporizing Metal Foils

[+] Author and Article Information
S. Cai

Beijing Electric Vehicle Co., Ltd,
BAIC Group,
No. 1 Caihe Road,
Caiyu Economic Development Area,
Beijing 102606, China
e-mail: sheng.cai@gmx.de

Manuscript received July 8, 2016; final manuscript received July 31, 2016; published online October 3, 2016. Editor: Y. Lawrence Yao.

J. Manuf. Sci. Eng 139(3), 031006 (Oct 03, 2016) (7 pages) Paper No: MANU-16-1372; doi: 10.1115/1.4034494 History: Received July 08, 2016; Revised July 31, 2016

In this work, a research on double-direction pressure distributions (DDPD) induced by vaporizing a single metal foil was conducted. The shock pressure in the up direction revealed the same amplitude as that in the down direction. Based on a comparison of pressure amplitudes between double-direction pressure distributions (DDPD) and single-direction pressure distributions (SDPD), the pressure upward in DDPD was found to be smaller than that in SDPD. In addition, an approach to vary the pressure amplitudes in the up and down directions in DDPD was introduced. Using polyurethane plates in different thicknesses leads to various pressure amplitudes on both sides of the foil specimen. Finally, the application of DDPD in metal forming process was examined. A profile forming part with two bulging zones was successfully manufactured.

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Fig. 1

Metal foils applied as actuator instead of tool coil

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Fig. 2

(a) Principle of free bulging test by vaporizing foils for SDPD, (b) principle of free bulging test by vaporizing foils for DDPD, and (c) dimension of aluminum foils

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Fig. 3

Example part of (a) free bulging test and (b) profile forming

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Fig. 4

Free bulging heights of parts by DDPD and SDPD

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Fig. 5

Part profiles under different charging energies: (a) 3 kJ, (b) 4 kJ, and (c) 5 kJ

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Fig. 6

Forming results using different polyurethane thicknesses: (a) free bulging heights of the parts and (b) profiles of the parts

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Fig. 7

Electrical circuit of profile forming by DDPD

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Fig. 8

Geometry of the die and the foil specimen

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Fig. 9

Profiles of the forming parts



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