Structural Engineering and Mechanics

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Inelastic general instability of ring-stiffened circular cylinders and cones under uniform external pressure

  • Ross, C.T.F. (Department of Mechanical and Manufacturing Engineering, University of Portsmouth)
  • Published : 1997.03.25
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Abstract

Experimental tests are described on three ring stiffened machined circular cylinders and three ring stiffened machined circular cones, which were tested to destruction under uniform external pressure. All six vessels failed by inelastic general instability. The experiments showed that the vessels initially deformed plastically at mid-bay in the circumferential direction, and this caused the circumferential tangent modulus to become much less than the elastic Young's modulus, causing the vessels to fail through plastic general instability at pressures much less than that predicted by elastic theory. Based on a thinness ratio, two semi-empirical design charts are provided, which are intended to be used for design purposes in conjunction with the finite element method and a plastic reduction factor.

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References

  1. Bosman, T.N., Pegg, N.G., Kenning, P.J. (1993), "Experimental and numerical determination of non-linear overall collapse of imperfect pressure hull compartments", RINA, London.
  2. Galletly, G.D., Slankard, R.C. and Wenk, E. (1958), "General instability of ring-stiffened cylindrical shells subject to external hydrostatic pressure-a comparison of theory and experiment", J Appl Mechs, ASME, 259-266, June.
  3. Kendrick, S. (1953), "The buckling under external pressure of circular cylindrical shells with evenly spaced equal strength circular ring frames-Part I", NCRE Report No R211.
  4. Nash, W.A. (1954), "General instability of ring-reinforced shells subject to hydrostatic pressure", Proc 2nd US National congress on Applied Mechanics, 359-368, June.
  5. Reynolds, T.E. and Blumenberg, W.F. (1959), "General instability of ring-stiffened cylindrical shells subject to external hydrostatic pressure", DTMB, Structural Mechanics Lab, Research and Development Report, Report 1324.
  6. Ross, C.T.F. (1965), "The collapse of ring-stiffened cylinders under uniform external pressure", RINA 1965.
  7. Ross, C.T.F. (1976), "Vibration and instability of ring-stiffened circular cylinders and conical shells", J Ship Res, 20 22-31 March.
  8. Ross, C.T.F. (1990), Pressure Vessel under External Pressure, Chapman & Hall.
  9. Ross, C.T.F. and Johns, T. (1988), "Buckling and vibration of ring-stiffened cones under uniform external pressure", Thin-Walled Structures, 6, 321-342. https://doi.org/10.1016/0263-8231(88)90007-9
  10. Ross, C.T.F., Aylward, W.R. and Boltwood, D.T. (1971), "General instability of ring-reinforced circular cylinders under external pressure", Trans RINA, 113, 73-82.
  11. Windenburg, D.F. and Trilling, C. (1934), "Collapse by instability of thin cylindrical shells under external pressure", Trans ASME, , 819-825.

Cited by

  1. A Review of External Pressure Testing Techniques for Shells including a Novel Volume-Control Method vol.50, pp.6, 2010, https://doi.org/10.1007/s11340-009-9272-3
  2. Numerical studies of the failure modes of ring-stiffened cylinders under hydrostatic pressure vol.70, pp.4, 1997, https://doi.org/10.12989/sem.2019.70.4.431