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Plastic buckling of ring-stiffened conical shells under external hydrostatic pressure
The paper describes experimental tests carried out on three ring-stiffened cones that were tested to destruction under external hydrostatic pressure. The cones were carefully machined from EN1A Steel. All three cones failed by plastic non-symmetric bifurcation buckling in a mode commonly known as general instability. In this mode the entire ring-shell combination buckles bodily. The paper also provides a design chart using the results obtained from these three vessels, together with the results of six other vessels obtained from other tests. The design chart allows the possibility of obtaining a plastic knock down factor, so that the theoretical buckling pressures, based on elastic theory, can be divided by the plastic knockdown factor, to give the predicted buckling pressure. This method can also be used for the design of full-scale vessels.
Plastic buckling of ring-stiffened conical shells under external hydrostatic pressure
The paper describes experimental tests carried out on three ring-stiffened cones that were tested to destruction under external hydrostatic pressure. The cones were carefully machined from EN1A Steel. All three cones failed by plastic non-symmetric bifurcation buckling in a mode commonly known as general instability. In this mode the entire ring-shell combination buckles bodily. The paper also provides a design chart using the results obtained from these three vessels, together with the results of six other vessels obtained from other tests. The design chart allows the possibility of obtaining a plastic knock down factor, so that the theoretical buckling pressures, based on elastic theory, can be divided by the plastic knockdown factor, to give the predicted buckling pressure. This method can also be used for the design of full-scale vessels.
Plastic buckling of ring-stiffened conical shells under external hydrostatic pressure
Ross, Carl T.F. (author) / Little, Andrew P.F. (author) / Adeniyi, Kehinde A. (author)
Ocean Engineering ; 32 ; 21-36
2005
16 Seiten, 5 Quellen
Article (Journal)
English
Plastic General Instability of Ring-Stiffened Conical Shells under External Pressure
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