A STUDY OF CREEP COLLAPSE OF A LONG CYLINDER UNDER UNIFORM EXTERNAL PRESSURE
Technical Report
·
OSTI ID:4279129
Equations are developed for the time behavior of the shape of cross section of a long thin-walled cylindrical shell under uniform external pressure. The shell material is assumed to exhibit only secondary creep deformations, and the cross section is constrained to distort in a two-lobe mode. The shell wall construction is of the sandwich type, with concentric cylindrical sheets supporting the normal loads, and the annular core supporting the shear loads. Explicit solutions are obtained for the panticular case of a cubic creep law, and curves of the amplitude of the cross-section shape factor vs. time, and of collapse time vs. initial amplitude are presented. The variation in the collapse time due to initial uncertainties in the initial amplitude is also derived and plotted. (auth)
- Research Organization:
- Lockheed Aircraft Corp. Missile Systems Div., Sunnyvale, Calif.
- NSA Number:
- NSA-13-007739
- OSTI ID:
- 4279129
- Report Number(s):
- LMSD-2360
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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