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Local buckling of thin-walled pipes being bent in the plastic range
AbstractThe well-known ‘strut on an elastic foundation’ theory for studying elastic buckling of axial loaded thin cylinders is reworked so that it can be used to study buckling of pipes during cold field bending. This operation involves straining of the material well into the plastic range so any buckling will be post-elastic. In order to use the theory, the moduli in the circumferential and longitudinal directions have to be selected and the considerable experimental evidence from pipes of widely differing geometry and materials support the choice as Young's modulus, E, for the modulus in the circumferential direction and the tangent modulus in the longitudinal direction. A simple graphical method enables both the stress and strain at buckling and the peak-to-peak distance between buckles to be predicted. The paper concludes with observations about the important influence that the shape of the stress-strain curve has upon buckling behaviour.
Local buckling of thin-walled pipes being bent in the plastic range
AbstractThe well-known ‘strut on an elastic foundation’ theory for studying elastic buckling of axial loaded thin cylinders is reworked so that it can be used to study buckling of pipes during cold field bending. This operation involves straining of the material well into the plastic range so any buckling will be post-elastic. In order to use the theory, the moduli in the circumferential and longitudinal directions have to be selected and the considerable experimental evidence from pipes of widely differing geometry and materials support the choice as Young's modulus, E, for the modulus in the circumferential direction and the tangent modulus in the longitudinal direction. A simple graphical method enables both the stress and strain at buckling and the peak-to-peak distance between buckles to be predicted. The paper concludes with observations about the important influence that the shape of the stress-strain curve has upon buckling behaviour.
Local buckling of thin-walled pipes being bent in the plastic range
Murray, N.W. (author) / Bilston, P. (author)
Thin-Walled Structures ; 14 ; 411-434
1992-02-03
24 pages
Article (Journal)
Electronic Resource
English
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