GENERAL ELASTIC-PLASTIC INSTABILITY OF RING-STIFFENED CYLINDRICAL SHELLS UNDER EXTERNAL PRESSURE

A variational principle and associated criteria on bifurcation and stability of elastic-plastic solids, which are expressed in terms of Lagrangian variables, are described. The principle is employed to study the effects of prebuckling deformation and yield surface corners on the inelastic asymmetric buckling of a ring-stiffened cylindrical shell under external pressure. The shell is made of a work hardening material having incremental type constitutive relationships associated with either Mises's yield surface or a yield surface with corners. An incremental Rayleigh-Ritz numerical method is employed to determine the non-linear deformation process and asymmetric bifurcation pressure. Numerical results are obtained and compared with available experimental results. (Author)

• Corporate Authors:

  Notre Dame University

  Solid Mechanics Group
  Notre Dame, Indiana,   United States  46556
• Authors:
  • Lee, LHN
• Publication Date: 1973-2

Media Info

• Pagination: 74 p.

Subject/Index Terms

• TRT Terms: Buckling; Computer programs; Cylinders (Geometry); Elastic analysis; Hydrostatic pressure; Mechanical rings; Numerical analysis; Shells (Structural forms); Stability (Mechanics); Structural analysis
• Identifier Terms: FORTRAN (Computer program language)
• Uncontrolled Terms: Cylindrical shells; Elastic stability; Structural properties
• Old TRIS Terms: Rayleigh-ritz method; Stiffened cylinders; Stiffening rings
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00046115
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: SM-156 Tech Rpt
• Contract Numbers: N00014-67-A-0242-000
• Files: TRIS
• Created Date: Oct 31 1973 12:00AM