Continued research on the strain to failure of thick-walled cylinders subjected to internal pressure

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:7038188

Roach, D P; Priddy, T G

The determination of the fully plastic response and pressure limit of a pressure vessel is of considerable importance in design. In-house experience in weapon development, new aerospace applications and autofrettage operations all require in-depth knowledge of the strength of high pressure containment structures. This paper presents additional results to support the strain-to-failure analysis of 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. The critical effective plastic strain depends on the level of tensile stress triaxiality which varies through the wall thickness. It is shown that the proposed strain-to-failure criterion is based on this triaxiality of stress in the critical region and can be used to predict the complete pressure versus strain relations and maximum pressure for the test cylinders. 17 refs., 12 figs.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 7038188
• Report Number(s): SAND-89-2505C; CONF-900617--6; ON: DE90008952
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220200 -- Nuclear Reactor Technology-- Components & Accessories
220900* -- Nuclear Reactor Technology-- Reactor Safety
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
42 ENGINEERING
420500 -- Engineering-- Materials Testing
ALGORITHMS
ALLOYS
ALUMINIUM
BRITTLENESS
CHEMICAL PROPERTIES
CONTAINERS
CRACKS
DEFORMATION
DESIGN
ELASTICITY
ELEMENTS
ENERGY TRANSFER
FAILURE MODE ANALYSIS
FAILURES
FLUID FLOW
FORECASTING
FRACTURE MECHANICS
FUNCTIONS
HEAT TRANSFER
IMPLEMENTATION
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
MEASURING METHODS
MECHANICAL PROPERTIES
MECHANICS
METALS
PERFORMANCE TESTING
PRESSURE EFFECTS
PRESSURE VESSELS
RECOMMENDATIONS
RUPTURES
STEELS
STRAINS
STRENGTH FUNCTIONS
STRESS ANALYSIS
STRUCTURAL MODELS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
TEMPERATURE EFFECTS
TENSILE PROPERTIES
TESTING
YIELDS