Structural Behavior of Monolithic Fuel Plates During Hot Isostatic Pressing and Annealing

Conference · Mon Mar 01 04:00:00 EST 2010

OSTI ID:986965

Medvedev, Pavel G; Ozaltun, Hakan

This paper presents results of the stress analysis in the monolithic fuel plates during thermal transients performed using COMSOL finite element analysis software. Large difference in the thermal expansion between the U-Mo foil and Al cladding is the main load origin during heating and cooling of the fuel plates. In addition, the mechanical behavior of the plate is affected by the difference in yield points between the foil and the cladding. This is manifested by the plastic deformation and permanent strains in the cladding, and elastic deformation of the foil. The results show existence of the critical temperature points at which the stresses change from compressive to tensile. The paper highlights principal differences in mechanical behavior between monolithic and dispersion fuel plates, underlines the need for mechanical property data, especially for the U-Mo alloys, and discusses the methodology for mechanical analysis of the monolithic plates.

• Research Organization: Idaho National Laboratory (INL)
• Sponsoring Organization: DOE - NE
• DOE Contract Number: AC07-05ID14517
• OSTI ID: 986965
• Report Number(s): INL/CON-09-17428
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ALLOYS
ANNEALING
CRITICAL TEMPERATURE
DEFORMATION
FUEL MANAGEMENT
FUEL PLATES
HEATING
HOT PRESSING
ORIGIN
PLASTICS
PLATES
RESEARCH REACTORS
STRAINS
STRESS ANALYSIS
STRESSES
THERMAL EXPANSION
TRANSIENTS
research reactor fuel