Study on Lateral Pressure-Transfer Regularity of Tube SGMF under High Pressure

Abstract:

The mechanical model of Tube Solid Granules Medium Forming (SGMF) is simplified to three pressure-transfer models: uniform pressure model, unequal diameter model and tube SGMF model. Combining the conclusions of the SGMF investigation and the theories of powder mechanics, lateral pressure-transfer regularity of SGMF under high pressure has been investigated and the mathematical formulas of pressure distribution have been obtained. According to the theoretical analysis, the lateral pressure and the depth of solid granules can be expressed by a segmented function. An experimental set-up has been designed and manufactured to evaluate the theoretical results, good correlation has been observed between the theoretical results and the experimental data.

• Periodical: Advanced Materials Research (Volume 900)
• Pages: 661-666
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.900.661
• Online since: February 2014
• Authors: Li Jun Wu, Chang Cai Zhao, Miao Yan Cao
• Keywords: Lateral Pressure, Pressure-Transfer Regularity, Solid Granules Medium Forming, Tube Bulging

References

[1] ZHAO Chang-cai, CAO Miao-yan, XIAO Hong, etc. Solid granular medium drawing process parameters of magnesium alloy sheet [J]. The Chinese Journal of Nonferrous Metals, 2012, 22(4): 991-999.

[2] CAO Miao-yan, ZHAO Chang-cai, DONG Guo-jiang. Numerical simulation on granules medium drawing process parameters of magnesium alloy sheet [J]. The Chinese Journal of Nonferrous Metals, 2012, 22(11): 2992-2999.

[3] ZHAO Chang-cai, Ren Xue-ping, DONG Guo-jiang, etc. Processes of Solid Granule Medium Forming and Plastic Research [J]. China Mechanical Engineering, 2007, 18(16): 2000-(2005).

[4] ZHAO Chang-cai, DONG Guo-jiang, XIAO Hong, etc. New Process of Solid Granule Medium Forming [J]. Journal of Mechanical Engineering, 2009, 45(8): 255-260.

[5] LIU Gang, ZHANG Wen-da, HE Zhu-bin, etc. Warm hydroforming of magnesium alloy tube with large expansion ratio within non-uniform temperature field [J]. Transactions of Nonferrous Metals Society of China, 2012, 22(s2): s408-s415.

DOI: 10.1016/s1003-6326(12)61739-7

[6] Shuhui LI, Xianfeng Chen, Qingshuai Kong, etc. Study on formability of tube hydroforming through elliptical die inserts [J]. Journal of Materials Processing Technology, 2012(212): 1916–(1924).

DOI: 10.1016/j.jmatprotec.2012.04.016

[7] DONG Guo-jiang, ZHAO Chang-cai, CAO Miao-yan, etc. Experimental research on physical properties of pressure-transfer medium in SGMF of plates and pipes [J]. Journal of Plasticity Engineering, 2010, 17(4): 71-75.