Effect of material properties on the strain to failure of thick-walled cylinders subjected to internal pressure

Journal Article · Sun May 01 00:00:00 EDT 1994 · Journal of Pressure Vessel Technology; (United States)

DOI:https://doi.org/10.1115/1.2929582· OSTI ID:7275623

Roach, D P; Priddy, T G ^[1]

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1. Sandia National Labs., Albuquerque, NM (United States)

The determination of the fully plastic response and pressure limit of a pressure vessel is of considerable importance in design, especially in autofrettage considerations. This paper presents the results of an experimental study which measured the maximum internal pressure which can be applied to thick-walled cylindrical vessels. Both aluminum and steel, with material properties ranging from ductile to brittle, were tested at stress levels through plastic and strain hardening ranges to fracture. From these tests, the pressure-expansion and through-thickness yielding characteristics were determined for these specimens. It is shown that a strain-to-failure criterion, based on the triaxiality of stress in the critical region, can be used to predict the complete pressure versus strain relations and maximum pressure for these cylinders. A simple tension-true stress-strain relation of the material is employed to analytically predict the response of the cylinder into the plastic regime. Finally, simplified theoretical and empirical formulas for bursting pressures are checked against the experimental results.

• OSTI ID: 7275623
• Journal Information: Journal of Pressure Vessel Technology; (United States), Vol. 116:2; ISSN 0094-9930
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
36 MATERIALS SCIENCE
ALUMINIUM
FAILURES
MECHANICAL PROPERTIES
PRESSURE VESSELS
DESIGN
STEELS
EXPERIMENTAL DATA
MECHANICAL TESTS
PRESSURE DEPENDENCE
RESIDUAL STRESSES
YIELD STRENGTH
ALLOYS
CONTAINERS
DATA
ELEMENTS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
METALS
NUMERICAL DATA
STRESSES
TESTING
420200* - Engineering- Facilities
Equipment
& Techniques
360103 - Metals & Alloys- Mechanical Properties