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Russian Physics Journal

, Volume 48, Issue 8, pp 880–886 | Cite as

Growth Retardation and Healing of Cylindrical Shell Wall Cracks under External Pressure with Different Profiles

  • D. I. Vaisburd
  • K. E. Evdokimov
  • O. V. Porutchikova
  • M. I. Chebodaev
Article
  • 18 Downloads

Abstract

Cracks are the most dangerous defects of shells operating at high internal hydrostatic and/or aerodynamic pressures. Unlimited crack growth causes the shell fracture, frequently with catastrophic consequences. It is experimentally established by direct observations of crack growth that cracks respond asymmetrically to compressive and tensile stresses: they grow at tensile stresses but are conserved and even healed at compressive stresses. One of the authors of the present paper was the first who suggested to use this fundamental crack property to retard the crack growth and to harden the shell by its hooping with a stressed bandage or an armor compressing the shell from outside and inverting the tensile stress created by the internal pressure into the compressive stress. In this regard, the problem on mechanical stresses created in the cylindrical shell wall under simultaneous action of external and uniform internal pressures is solved in the present paper.

Keywords

Tensile Stress Compressive Stress Growth Retardation Mechanical Stress Direct Observation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  • D. I. Vaisburd
    • 1
  • K. E. Evdokimov
    • 1
  • O. V. Porutchikova
    • 1
  • M. I. Chebodaev
    • 1
  1. 1.Tomsk Polytechnic UniversityRussia

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