Imperfections and energy barriers in shell buckling

  title={Imperfections and energy barriers in shell buckling},
  author={John W. Hutchinson and J. M. T. Thompson},
  journal={International Journal of Solids and Structures},
Abstract The elastic buckling of shell structures such as spherical shells subject to external pressure and cylindrical shells loaded in axial compression is highly sensitive to imperfections and often catastrophic. Recent studies of spherical shells have provided accurate quantitative results for the relation between the buckling pressure and the amplitude and shape of geometric imperfections and, additionally, quantitative results for the energy barrier that must be overcome to buckle the… Expand
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  • Physics, Medicine
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2017
The nonlinear axisymmetric post-buckling behaviour of perfect, thin, elastic spherical shells subject to external pressure and their asymmetric bifurcations are characterized, providing results for aExpand
Buckling of spherical shells revisited
  • J. Hutchinson
  • Physics
  • Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2016
A study is presented of the post-buckling behaviour and imperfection sensitivity of complete spherical shells subject to uniform external pressure. The study builds on and extends the majorExpand
The Geometric Role of Precisely Engineered Imperfections on the Critical Buckling Load of Spherical Elastic Shells
We study the effect of a dimple-like geometric imperfection on the critical buckling load of spherical elastic shells under pressure loading. This investigation combines precision experiments, finiteExpand
Knockdown factors for buckling of cylindrical and spherical shells subject to reduced biaxial membrane stress
Abstract Cylindrical shells under uniaxial compression and spherical shells under equi-biaxial compression display the most extreme buckling sensitivity to imperfections. In engineering practice, theExpand
Buckling of a pressurized hemispherical shell subjected to a probing force
We study the buckling of hemispherical elastic shells subjected to the combined effect of pressure loading and a probing force. We perform an experimental investigation using thin shells of nearlyExpand
Shock-Sensitivity in Shell-Like Structures: With Simulations of Spherical Shell Buckling
Assessment in general terms how a single control can capture remote saddle solutions is assessed: in particular, how a symmetric probe could locate an asymmetric solution. Expand
Buckling of a spherical shell under external pressure and inward concentrated load: Asymptotic solution
An asymptotic solution is suggested for a thin isotropic spherical shell subject to uniform external pressure and concentrated load. The pressure is the main load and a concentrated lateral load isExpand
Advances in Shell Buckling: Theory and Experiments
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  • Computer Science, Physics
  • Int. J. Bifurc. Chaos
  • 2015
The true significance of the Maxwell energy criterion load was showed in predicting the sudden onset of "shock sensitivity" to lateral disturbances, and how these concepts relate to the response and energy barriers of an axially compressed cylindrical shell. Expand
Energy barrier as a criterion for stability estimation of spherical shell under uniform external pressure
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