Structural Engineering and Mechanics

  • 제60권1호
  • /
  • Pages.91-110
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  • 2016
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Deformation behaviours of SS304 tubes in pulsating hydroforming processes

  • Yang, Lianfa (Faculty of Mechanical & Electrical Engineering, Guilin University of Electronic Technology) ;
  • Wang, Ninghua (Faculty of Mechanical & Electrical Engineering, Guilin University of Electronic Technology) ;
  • He, Yulin (Faculty of Mechanical & Electrical Engineering, Guilin University of Electronic Technology)
  • 투고 : 2015.11.17
  • 심사 : 2016.07.12
  • 발행 : 2016.10.10
⟨ 이전 논문 다음 논문 ⟩

초록

Tube hydroforming (THF) under pulsating hydraulic pressures is a novel technique that applies pulsating hydraulic pressures that are periodically increased to deform tubular materials. The deformation behaviours of tubes in pulsating THF may differ compared to those in conventional non-pulsating THF due to the pulsating hydraulic pressures. The equivalent stress-strain relationship of metal materials is an ideal way to describe the deformation behaviours of the materials in plastic deformation. In this paper, the equivalent stress-strain relationships of SS304 tubes in pulsating hydroforming are determined based on experiments and simulation of free hydraulic bulging (FHB), and compared with those of SS304 tubes in non-pulsating THF and uniaxial tensile tests (UTT). The effect of the pulsation parameters, including amplitude and frequency, on the equivalent stress-strain relationships is investigated to reveal the plastic deformation behaviours of tubes in pulsating hydroforming. The results show that the deformation behaviours of tubes in pulsating hydroforming can be well described by the equivalent stress-stain relationship obtained by the proposed method. The amplitude and frequency of pulsating hydraulic pressure have distinct effects on the equivalent stress-strain relationships-the equivalent stress becomes augmented and the formability is enhanced with the increase of the pulsation amplitude and frequency.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

참고문헌

  1. Bortot, P., Ceretti, E. and Giardini, C. (2008), "The determination of flow stress of tubular material for hydroforming applications", J. Mater. Proc. Tech., 203(1-3), 318-388.
  2. Boudeau, N. and Malecot, P. (2012), "A simplified analytical model for post-processing experimental results from tube bulging test: Theory, experimentations, simulations", Int. J. Mech. Sci., 65, 1-11. https://doi.org/10.1016/j.ijmecsci.2012.08.002
  3. Fuchizawa, S. and Narazakiv, M. (1993), "Bulge test for determining stress-strain characteristics of thin tubes", Adv. Tech. Plast., 1, 488-493.
  4. Hosford, W.F. and Caddell R.M. (2011), Plasticity Metal Forming: Mechanics and Metallurgy, 3rd Edition, W.F. Hosford, Ed., Cambridge University Press, USA.
  5. Hwang, Y.M. and Wang, C.W. (2009), "Flow stress evaluation of zinc copper and carbon steel tubes by hydraulic bulge tests considering their anisotropy", J. Mater. Proc. Tech., 209(9), 4423-4428. https://doi.org/10.1016/j.jmatprotec.2008.10.033
  6. Jia, H.J., Yang, L.F. and Liu, J.W. (2014), "Establishment of stress-strain relationships of tailor-welded tubes via DIC method based on uniaxial tensile tests", Key. Eng. Mater., 611-612, 475-482. https://doi.org/10.4028/www.scientific.net/KEM.611-612.475
  7. Loh-Mousavi, M., Bakhshi-Jooybari, M., Mori, K. and Hyashi, K. (2008), "Improvement of formability in T-shape hydro-forming of tubes by pulsating pressure", Eng. Manuf., 222, 1139-1146. https://doi.org/10.1243/09544054JEM1143
  8. Loh-Mousavi, M., Bakhshi, M. and Mori, K. (2010), "Mechanism of improvement of formability in pulsating hydroforming of T-shape tubes", Amirkabir/MISC, 42(1), 29-35.
  9. Loh-Mousavi, M., Bakhshi, M., Mori, K., Maeno, T., Farzin, M. and Hosseinipour, S.J. (2008), "3-D finite element simulation of pulsating free bulge hydroforming of tubes", Iran. J. Sci. Technol. B, 32(6), 611-618.
  10. Loh-Mousavi, M., Mirhosseini, A.M. and Amirian, G. (2011), "Investigation of modified bi-layered tube hydro-forming by pulsating pressure", Key Eng. Mater., 15(486), 5-8.
  11. Mori, K., Maeno, T. and Maki, S. (2007), "Mechanism of improvement of formability in pulsating hydroforming of tubes", Int. J. Mach. Tool. Manuf., 47(6), 978-984. https://doi.org/10.1016/j.ijmachtools.2006.07.006
  12. Rikimaru, T. and Ito, M. (2001), "Hammering hydro-forming of tubes", Press Work., 39(7), 58-65.
  13. Strano, M. and Altan, T. (2004), "An inverse energy approach to determine the flow stress of tubular materials for hydroforming applications", J. Mater. Proc. Tech., 146(1), 92-96. https://doi.org/10.1016/j.jmatprotec.2003.07.016
  14. Xu, Y., Zhang, S.H, Cheng, M., Song, H.W. and Zhang, X.S. (2014), "Application of pulsating hydroforming in manufacture of engine cradle of austenitic stainless steel", Procedia. Eng., 81, 2205-2210. https://doi.org/10.1016/j.proeng.2014.10.309
  15. Yang, L.F. and Guo, C. (2008), "Determination of stress-strain relationship of tubular material with hydraulic bulge test", Thin Wall. Struct., 46, 147-154. https://doi.org/10.1016/j.tws.2007.08.017
  16. Yang, L.F., Rong, H.S. and He, Y.L. (2014), "Deformation behavior of a thin-walled tube in hydroforming with radial crushing under pulsating hydraulic pressure", J. Mater. Eng. Perform., 23(2), 429-438. https://doi.org/10.1007/s11665-013-0783-9
  17. Zhan, M., Du, H.F., Liu, J., Ren, N., Yang, H., Jiang, H.M., Diao, K.S. and Chen, X.P. (2010), "A method for establishing the plastic constitutive relationship of the weld bead and heat-affected zone of welded tubes based on the rule of mixtures and a micro-hardness test", Mater. Sci. and Eng., 527, 2864-2874. https://doi.org/10.1016/j.msea.2010.01.009

피인용 문헌

  1. Describing tube formability during pulsating hydroforming using forming limit diagrams vol.52, pp.4, 2017, https://doi.org/10.1177/0309324717703511