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Cluster Computing

, Volume 22, Supplement 2, pp 2955–2961 | Cite as

Load-deflection model for T-section rail press straightening process under lateral loads

Article

Abstract

Straightening is an important process in the production route of a T-section rail. The three point reverse bending method has been utilized extensively for rail straightening process due to its apparent simplicity and good flexibility. Therefore, this paper studies the load-deflection model in the three point bending and its application for T-section rail press straightening process under lateral loads, considering the work-hardening materials. An elastic-plastic power-law hardening model of the material is adopted. The analytical formulas of the relationship between the loading force and the bending deflection is given in the elastic deformation stage and the elastic-plastic deformation stage during the bending process. The corresponding loading deflections for straightening certain initial deflections of a rail are also calculated according to the simple unloading law. The theoretical results are then compared with the experimental data of rails with different initial bending deflections. It is found that the load-deflection model and straightening model established in this study could achieve an allowable straightness error. The results of this subject can be provided as an analysis reference for the automatic control strategy of a rail straightening process.

Keywords

T-section rail Straightening Initial bending deflection Load-deflection model 

References

  1. 1.
    Kaiser, R., Stefenelli, M., Hatzenbichler, T., et al.: Experimental characterization and modelling of triaxial residual stresses in straightened railway rails. J. Strain Anal. Eng. Des. 50(3), 190–198 (2014)CrossRefGoogle Scholar
  2. 2.
    Papageorgiou, D.G., Varvagiannis, S., Sideris, J., Medrea, C.: Fracture analysis of a cutting tool used in a straightening and twin bended system for coiled re-bars machine. Eng. Fail. Anal. 59(8), 347–353 (2016)CrossRefGoogle Scholar
  3. 3.
    Ma, L., Ma, Z., Jia, W., et al.: Research and verification on neutral layer offset of bar in two-roll straightening process. Int. J. Adv. Manuf. Technol. 79(9–12), 1519–1529 (2015)CrossRefGoogle Scholar
  4. 4.
    Panthi, S.K., Ramakrishnan, N., Ahmed, M., Singh, S.S., Goel, M.D.: Finite element analysis of sheet metal bending process to predict the springback. Mater. Des. 31(2), 657–662 (2010)CrossRefGoogle Scholar
  5. 5.
    Kazan, R., Fırat, M., Tiryaki, A.E.: Prediction of springback in wipe-bending process of sheet metal using neural network. Mater. Des. 30(2), 418–423 (2009)CrossRefGoogle Scholar
  6. 6.
    Sitar, M., Kosel, F., Brojan, M.: Numerical and experimental analysis of elastic-plastic pure bending and springback of beams of asymmetric cross-sections. Int. J. Mech. Sci. 90(8), 77–88 (2015)CrossRefGoogle Scholar
  7. 7.
    Li, J., Xiong, G.L.: Study on calculation method of press straightening stroke based on straightening process model. Key Eng. Mater. 340–341, 1345–1350 (2007)CrossRefGoogle Scholar
  8. 8.
    Štok, B., Halilovič, M.: Analytical solutions in elasto-plastic bending of beams with rectangular cross section. Appl. Math. Model. 33(3), 1749–1760 (2009)CrossRefGoogle Scholar
  9. 9.
    Kosel, F., Videnic, T., Kosel, T., Brojan, M.: Elasto-plastic springback of beams subjected to repeated bending/unbending histories. J. Mater. Eng. Perform. 20(6), 846–854 (2010)CrossRefGoogle Scholar
  10. 10.
    Eggertsen, P.A., Mattiasson, K.: On the identification of kinematic hardening material parameters for accurate springback predictions. Int. J. Mater. Form. 4(6), 103–120 (2011)CrossRefGoogle Scholar
  11. 11.
    Bruschi, S., Altan, T., Banabic, D., et al.: Testing and modelling of material behaviour and formability in sheet metal forming. CIRP Ann. Manuf. Technol. 63(2), 727–749 (2014)CrossRefGoogle Scholar
  12. 12.
    Jamli, M.R., Ariffin, A.K., Wahab, D.A.: Integration of feedforward neural network and finite element in the draw-bend springback prediction. Exp. Syst. Appl. 41(5), 3662–3670 (2014)CrossRefGoogle Scholar
  13. 13.
    Chongthairungruang, B., Uthaisangsuk, V., Suranuntchai, S., Jirathearanat, S.: Springback prediction in sheet metal forming of high strength steels. Mater. Des. 50(2), 253–266 (2013)CrossRefGoogle Scholar
  14. 14.
    Vorkov, V., Aerens, R., Vandepitte, D., Duflou, J.R.: Springback prediction of high-strength steels in large radius air bending using finite element modeling approach. Procedia Eng. 81(8), 1005–1010 (2014)CrossRefGoogle Scholar
  15. 15.
    Grilo, T.J., Vladimirov, I.N., Valente, R.A.F., Reese, S.: A finite strain constitutive model for non-quadratic yield criteria and nonlinear kinematic/isotropic hardening: application to sheet metal forming. Arch. Appl. Mech. 86(1–2), 147–163 (2016)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Mechanical EngineeringUniversity of Shanghai for Science and TechnologyShanghaiChina

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