Abstract
In a tube forming process, granular matter is used as pressure transmission medium instead of liquid to expand a circular tube into one with square section. In this process, the friction at media/tube interface has a significant effect on the final result. In this paper, an analytical model was developed to determine the influence of the friction on the deformation developing process and final thickness distribution along the tube section. Experimental researches were also implemented to evaluate the analytical model in the end. In this model, four friction situations were applied to the numerical analysis process according to the active or negative function of friction on the flow of metal. The analysis result showed that different friction situations could lead to different deformation processes and thickness distributions. The examination on experiments of AA6061 tube indicated that the experimental data of thickness was extremely close to the analysis result with the friction situation in which the metal flow toward the corner of square section die was impeded by the friction force. However, the analytical prediction of thinning trend of thickness had a deviation compared with the experimental data in the corner region. In addition, the breaking and caking of granules in the tube forming process make the friction situation between the tube and media very complex. Therefore, a further research needs to be conducted from the direction of granular matter mechanics and friction mechanism in order to acquire a more explicit result.
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References
Bayoumi LS, Attia AS (2009) Determination of the forming tool load in plastic shaping of a round tube into a square tubular section. J Mater Process Technol 209(4):1835–1842. https://doi.org/10.1016/j.jmatprotec.2008.04.047
Barnwal VK, Raghavan R, Tewari A, Narasimhan K, Mishra SK (2017) Effect of microstructure and texture on forming behaviour of AA-6061 aluminium alloy sheet. Mat Sci Eng A-Struct 679:56–65. https://doi.org/10.1016/j.msea.2016.10.027
Hwang YM, Wu RK (2016) Process and loading path design for hydraulic compound forming of rectangular tubes. Int J Adv Manuf Technol 91(5):1–8. https://doi.org/10.1007/s00170-016-9919-z
Jia X, Zhao C (2016) Research and application of weight function in flexible male die drawing deformation mechanism. Int J Adv Manuf Technol 89(5–8):1–16. https://doi.org/10.1007/s00170-016-9182-3
Dong G, Zhao C, Peng Y, Li Y (2015) Hot granules medium pressure forming process of AA7075 conical parts. Chin J Mech Eng 28(3):580–591. https://doi.org/10.3901/CJME.2015.0217.019
Cao M, Zhao C, Dong G, Yang S (2016) Instability analysis of free deformation zone of cylindrical parts based on hot-granule medium-pressure forming technology. Trans Nonferrous Met Soc China 26(8):2188–2196. https://doi.org/10.1016/S1003-6326(16)64335-2
Dong G, Yang Z, Zhao J, Zhao C, Cao M (2016) Stress-strain analysis on AA7075 cylindrical parts during hot granule medium pressure forming. J Cent South Univ 23(11):2845–2857. https://doi.org/10.1007/s11771-016-3348-x
Chen X, Zhao C, Dong G, Yang Z, Cao M (2016) Formability of hot non-metallic granule medium of AA5083 aluminum alloy tube under various loading paths. China Mechanical Engineering (in Chinese). https://doi.org/10.3969/j.issn.1004-132X.2016.18.022
Grüner M, Merklein M (2010) Numerical simulation of hydro forming at elevated temperatures with granular material used as media compared to the real part geometry. Int J Mater Form 3(1):279–282. https://doi.org/10.1007/s12289-010-0761-9
Grüner M, Merklein M (2011) Influences on the molding in hydroforming using granular material as a medium. AIP Conf Proc 1383:645–652. https://doi.org/10.1063/1.3623668
Grüner M, Gnibl T, Merklein M (2014) Blank hydroforming using granular material as medium-investigations on leakage. Procedia Eng. 81:1035–1042. https://doi.org/10.1016/j.proeng.2014.10.137
Chen H, Güner A, Khalifa NB, Tekkaya AE (2016) Granular media-based tube press hardening. J Mater Process Technol 228:145–159. https://doi.org/10.1016/j.jmatprotec.2015.03.028
Kridli GT, Bao L, Mallick PK, Tian Y (2003) Investigation of thickness variation and corner filling in tube hydroforming. J Mater Process Technol 133(3):287–296. https://doi.org/10.1016/S0924-0136(02)01004-X
Zhang WW, Wang XS, Cui XL, Yuan SJ (2015) Analysis of corner filling behavior during tube hydro-forming of rectangular section based on Gurson–Tvergaard–Needleman ductile damage model. Proc IMechE Part B: J Eng Manuf 229(9):1566–1574. https://doi.org/10.1177/0954405414537247
Hwang YM, Chen WC (2005) Analysis of tube hydroforming in a square cross-sectional die. Int J Plast 21(9):1815–1833. https://doi.org/10.1016/j.ijplas.2004.09.004
Orban H, Hu SJ (2007) Analytical modeling of wall thinning during corner filling in structural tube hydroforming. J Mater Process Technol 194(1–3):7–14. https://doi.org/10.1016/j.jmatprotec.2007.03.112
Abdelkefi A, Guermazi N, Boudeau N, Malécot P, Haddar N (2016) Effect of the lubrication between the tube and the die on the corner filling when hydroforming of different cross-sectional shapes. Int J Adv Manuf Technol 87(1169–1181):1169–1181. https://doi.org/10.1007/s00170-016-8552-1
Abdelkefi A, Malécot P, Boudeau N, Guermazi N, Haddar N (2017) Evaluation of the friction coefficient in tube hydroforming with the “corner filling test” in a square section die. Int J Adv Manuf Technol 88:2265–2273. https://doi.org/10.1007/s00170-016-8945-1
GhorbaniMenghari H, ZiaeiPoor H, Farzin M, Alves De Sousa RJ (2014) An approach to improve thickness distribution and corner filling of copper tubes during hydro-forming processes. Struct Eng Mech 50(4):563–573. https://doi.org/10.12989/sem.2014.50.4.563
Eftekhari Shahri SE, Ahmadi Boroughani SY, Khalili K, Kang BS (2015) Ultrasonic tube hydroforming, a new method to improve formability. Procedia Technol. 19:90–97. https://doi.org/10.1016/j.protcy.2015.02.014
Dong G, Zhao C, Cao M (2013) Flexible-die forming process with solid granule medium on sheet metal. Trans Nonferrous Met Soc China 23(9):2666–2677. https://doi.org/10.1016/S1003-6326(13)62783-1
He Z, Fan X, Shao F, Wang Z, Yuan S (2012) Formability and microstructure of AA6061 Al alloy tube for hot metal gas forming at elevated temperature. Trans Nonferrous Met Soc China 22:s364–s369. https://doi.org/10.1016/S1003-6326(12)61732-4
Seyedkashi SMH, Naeini HM, Moon YH (2014) Feasibility study on optimized process conditions in warm tube hydroforming. J Mech Sci Technol 28(7):2845–2852. https://doi.org/10.1007/s12206-014-0638-9
Khosrojerdi E, Bakhshi-Jooybari M, Gorji A, Hosseinipour SJ (2017) Experimental and numerical analysis of hydrodynamic deep drawing assisted by radial pressure at elevated temperatures. Int J Adv Manuf Technol 88(1–4):185–195. https://doi.org/10.1007/s00170-016-8753-7
Dong GJ, Bi J, Du B, Chen XH, Zhao CC (2017) Research on AA6061 tubular components prepared by combined technology of heat treatment and internal high pressure forming. J Mater Process Technol 242:126–138. https://doi.org/10.1016/j.jmatprotec.2016.11.035
Funding
The present work is financed by the National Natural Science Foundation of China (contract no. 51605420 and 51775481), the Talent Engineering Project of Heibei Province of China (grant number A2016002017), and the Key Project of Science and Technology Plan of Hebei Higher School of Education Department (grant number ZD2017078). The authors would like express their sincere appreciation to the funds.
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Yang, Z., Zhao, C., Dong, G. et al. Analytical model of corner filling with granular media to investigate the friction effect between tube and media. Int J Adv Manuf Technol 99, 211–224 (2018). https://doi.org/10.1007/s00170-018-2429-4
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DOI: https://doi.org/10.1007/s00170-018-2429-4