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

Conference · Mon Jan 01 00:00:00 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 Lab. (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 7038188
• Report Number(s): SAND-89-2505C; CONF-900617-6; ON: DE90008952
• Resource Relation: Conference: Pressure vessels and piping conference: be in tune for the 90's, Nashville, TN (USA), 17-21 Jun 1990
• Country of Publication: United States
• Language: English

Related Subjects

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