Analysis of failure of a torispherical head under internal pressure
Book
·
OSTI ID:404297
- Lehigh Univ., Bethlehem, PA (United States)
Analytic results are presented for the behavior of a torispherical head when subjected to internal pressure, from zero up to the ultimate pressure that the head can sustain. The geometry of a 1994 PVRC test head is used as an example. Strains, remaining wall thicknesses, and radii of curvature are calculated at the crown and in the knuckle. These data are examined for failure by tensile plastic instability. The results show no such failure in the knuckle at pressures anywhere near those predicted by limit analysis, not even when a perfectly plastic material behavior is assumed. They also show no strain concentrations (hinges) in the knuckle that are predicted by limit analysis. It is found that the knuckle suffers practically no wall-thinning in almost the entire pressure range. The only indication of failure by a tensile plastic instability is found to occur at the crown of the head.
- OSTI ID:
- 404297
- Report Number(s):
- CONF-960706--; ISBN 0-7918-1785-7
- Country of Publication:
- United States
- Language:
- English
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