Strain to failure of pressurized thick wall cylinders

Conference · Sun Jan 01 00:00:00 EST 1989

OSTI ID:6039268

Priddy, T. G.; Roach, D. P.

The determination of the fully plastic response and pressure limit of a highly pressurized vessel is of considerable importance in design. The plastic-strain response during and following autofrettage operations, in comparison with the limiting strain condition, is of special interest. This paper presents the results of an analysis method for thick wall, high pressure, cylinders where the effective plastic strain distribution through the thickness is the material response variable of primary interest. The limiting value of this effective plastic strain depends on the level of tensile-stress triaxiality which also varies through the thickness. This strain-to-failure criterion is used to predict the complete pressure versus strain response and the maximum pressure for test cylinders. A simple model of effective-stress versus effective plastic strain is employed. This model is quantified by data taken from uniaxial, tension, true-stress-strain curves and from the fracture zone of the tensile specimen. A sample calculation is included and, in a companion paper, a series of burst tubes having properties ranging from brittle to ductile are compared with this analytical method. 21 refs., 5 figs., 2 tabs.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6039268
• Report Number(s): SAND-89-0343C; CONF-890721-20; ON: DE89009969
• Resource Relation: Conference: Joint ASME/JSME pressure vessel and piping conference, Honolulu, HI, USA, 23 Jul 1989; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
PRESSURE VESSELS
STRESS ANALYSIS
CYLINDERS
CYLINDRICAL CONFIGURATION
DESIGN
DUCTILITY
ELASTICITY
FAILURES
MATHEMATICAL MODELS
STRAIN HARDENING
STRESSES
T CODES
TENSILE PROPERTIES
THICKNESS
COMPUTER CODES
CONFIGURATION
CONTAINERS
DIMENSIONS
HARDENING
MECHANICAL PROPERTIES
420500* - Engineering- Materials Testing
420200 - Engineering- Facilities
Equipment
& Techniques