Accession Number:

AD0712522

Title:

INELASTIC BUCKLING OF AXISYMMETRIC SHELLS.

Descriptive Note:

Technical rept.,

Corporate Author:

NOTRE DAME UNIV IND COLL OF ENGINEERING

Personal Author(s):

Report Date:

1970-08-01

Pagination or Media Count:

64.0

Abstract:

An incremental variational method is presented for the determination of the inelastic load-deformation relationship, as well as the buckling or collapse load for a shell of revolution which is made of a work hardening material and subjected to axisymmetric loadings. A variational principle involving the Kirchhoff stress tensor, the Green strain tensor, and their rates is employed. The isothermal stress-strain relationship based on a modified J2 incremental theory of plasticity is used. A seven sheet sandwich shell idealization and the finite difference method of variational calculus are utilized in a numerical procedure in order to determine discrete velocities and a subsequent deformation process. The buckling loads of a number of elastic and inelastic cylindrical and truncated conical shells as well as inelastic spherical shell caps are determined. The results of the present analysis, obtained numerically by a Univac 1107 digital computer, compare favorably with available experimental data. Author

Subject Categories:

  • Structural Engineering and Building Technology
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE