Accession Number:

ADA190124

Title:

Buckling of Blast Loaded Cylinder

Descriptive Note:

Final rept. 1985-1986

Corporate Author:

ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Report Date:

1987-10-01

Pagination or Media Count:

55.0

Abstract:

The transient response of a thin-walled aluminum cylinder subjected to an enveloping shock wave has been simulated with the ADINA finite element program and the results have been compared with counterpart experimental data. The analysis employed the ADINA 16-noded rectangular curved shell. Using linear analysis, the computed strain histories at gage locations were found to correlate reasonably well with test records for the first four milliseconds, but some strain records rapidly diverged thereafter. A subsequent nonlinear analysis showed dynamic buckling to be the principal cause of this discrepancy. The non-linear calculations and test results were found to generally agree in the number of buckling nodes, The magnitude of the deformation, and frequencies excited, although buckling sensitivity to imperfections prevented an exact coincidence of circumferential modes.

Subject Categories:

  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE