Steel and Composite Structures

  • 제12권4호
  • /
  • Pages.291-302
  • /
  • 2012
  • /
  • 1229-9367(pISSN)
  • /
  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Influence of the cylinder height on the elasto-plastic failure of locally supported cylinders

  • Jansseune, Arne (Department of Civil Engineering, Faculty of Applied Engineering Sciences, University College Ghent, Ghent University Association) ;
  • De Corte, Wouter (Department of Civil Engineering, Faculty of Applied Engineering Sciences, University College Ghent, Ghent University Association) ;
  • Vanlaere, Wesley (Department of Structural Engineering, Faculty of Engineering Sciences, Ghent University) ;
  • Van Impe, Rudy (Department of Structural Engineering, Faculty of Engineering Sciences, Ghent University)
  • 투고 : 2010.11.25
  • 심사 : 2012.01.29
  • 발행 : 2012.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

Frequently, steel silos are supported by discrete supports or columns to permit easy access beneath the barrel. In such cases, large loads are transferred to the limited number of supports, causing locally high axial compressive stress concentrations in the shell wall above the supports. If not dealt with properly, these increased stresses will lead to premature failure of the silo due to local instability in the regions above the supports. Local stiffening near the supports is a way to improve the buckling resistance, as material is added in the region of elevated stresses, levelling these out to values found in uniformly supported silos. The aim of a study on the properties of local stiffening will then be to increase the failure load, governed by an interaction of plastic collapse and elastic instability, to that of a discrete supported silo. However, during the course of such a study it was found that, although the failure remains local, the cylinder height is also a parameter that influences the failure mechanism, a fact that is not properly taken into account in current design practice and codes. This paper describes the mechanism behind the effect of the cylinder height on the failure load, which is related to pre-buckling deformations of the shell structure. All results and conclusions are based on geometrically and materially non-linear finite element analyses.

키워드

참고문헌

  1. Dassault Systemes (2009), Abaqus Documentation Version 6.9, Simulia. Rhode Island, USA.
  2. Doerich, C. (2007), "Strength and Stability of locally supported cylinders", Institute for Infrastructure & Environment, The School of Engineering and Electronics, University of Edinburgh. PhD Thesis.
  3. Doerich, C. and Rotter, J.M. (2008), "Buckling behaviour of cylindrical shells on local brackets," J. Struct. Eng., 134(8), 1269-1277. https://doi.org/10.1061/(ASCE)0733-9445(2008)134:8(1269)
  4. Doerich, C., Vanlaere, W., Lagae, G. and Rotter, J.M. (2009), "Stability of column-supported steel cylinders with engaged columns," Proceedings of the International Association for Shell and Spatial Structures (IASS) Symposium, Valencia, 2009.
  5. Guggenberger, W. (2006), "Elastic stability and imperfection sensitivity of axially loaded cylindrical shells on narrow supports," Comput. Mech., 37(6), 537-550. https://doi.org/10.1007/s00466-005-0734-x
  6. Guggenberger, W., Greiner, R. and Rotter, J.M. (2004), "Cylindrical shells above local supports," Buckling of Thin Metal Shells. Eds: Teng, J.G. and Rotter, J.M. London, Spon Press: 88-128.
  7. Hubner, A., Teng., J.G. and Saal., H. (2006), "Buckling behaviour of large steel cylinders with patterned welds," Int. J. Pres. Ves. Pip., 83(1), 13-26. https://doi.org/10.1016/j.ijpvp.2005.10.003
  8. ECCS (2008), Buckling of Steel Shells: European Recommendations, 5th Edition, European Convention for Constructional Steelwork, Brussels.
  9. EN 1993-1-6 (2007), "Eurocode 3: Design of Steel Structures, Part 1.6: Strength and Stability of Shell Structures," CEN, Brussels.
  10. Knoedel, P. and Ummernhofer, T. (2009), "Silos with stepped wall thickness on local supports," Proceedings of the International Association for Shell and Spatial Structures (IASS) Symposium, Valencia, 2009.
  11. Riks, E. (1972), "Application of Newtons method to problem of elastic stability," Mech. Eng., 94(9), 66-&.
  12. Riks, E. (1979), "An incremental approach to the solution of snapping and buckling problems," Int. J. Solids Struct., 15(7), 529-551. https://doi.org/10.1016/0020-7683(79)90081-7
  13. Rotter, J.M. (2004), "Buckling of cylindrical shells under axial compression," Buckling of Thin Metal Shells. Eds: Teng, J.G. and Rotter, J.M. London, Spon Press: 42-87.
  14. Rotter, J.M. (2009), "Silos and tanks in research and practice: state of the art and current challenges," Proceedings of the International Association for Shell and Spatial Structures (IASS) Symposium, Valencia, 2009.
  15. Timoshenko, S.P. (1910), "Einige Stabilitätsprobleme der Elasticitätstheorie," Z. Math. Phys., 58, 378-385.
  16. Timoshenko, S.P. and Woinowsky-Krieger, S. (1959), Theory of Plates and Shells. 2nd edition, New York, McGraw-Hill.
  17. Vanlaere, W. (2006), "Buckling behaviour of stiffened cylinders on local supports," Department of Civil Engineering, Ghent. University of Ghent. PhD Thesis.
  18. Vanlaere, W., Doerich C., Lagae G. and Van Impe R. (2009), "Steel cylinders on local supports with rigid stiffeners," Proceedings of the IASS Symposium, Valencia.
  19. Vanlaere, W., Van Impe R. and Lagae, G. (2006), "Buckling of stringer stiffened cylinders on local supports," Responding to Tomorrow's Challenges in Structural Engineering. IABSE Symposium, Budapest, Hungary.

피인용 문헌

  1. Optimal stiffening configuration for locally supported cylindrical silos: Engaged columns vol.119, 2016, https://doi.org/10.1016/j.jcsr.2015.12.004
  2. Investigation of stiffening scheme effectiveness towards buckling stability enhancement in tubular steel wind turbine towers vol.19, pp.5, 2015, https://doi.org/10.12989/scs.2015.19.5.1115
  3. Elastic failure of locally supported silos with U-shaped longitudinal stiffeners vol.19, pp.4, 2015, https://doi.org/10.1007/s12205-015-0001-4
  4. Imperfection sensitivity of locally supported cylindrical silos subjected to uniform axial compression vol.96, 2016, https://doi.org/10.1016/j.ijsolstr.2016.06.019
  5. Column-supported silos: Elasto-plastic failure vol.73, 2013, https://doi.org/10.1016/j.tws.2013.08.005
  6. Elasto-plastic failure of locally supported silos with U-shaped longitudinal Stiffeners vol.70, 2016, https://doi.org/10.1016/j.engfailanal.2016.07.012
  7. Application of ring beam stiffness criterion for discretely supported shells under global shear and bending pp.2048-4011, 2018, https://doi.org/10.1177/1369433218758476
  8. Probabilistic Fracture Mechanics for Analysis of Longitudinal Cracks in Pipes Under Internal Pressure vol.18, pp.6, 2018, https://doi.org/10.1007/s11668-018-0564-8