Consistent linearization method for finite-element analysis of viscoelastic materials

Conference · Sun May 01 00:00:00 EDT 1983

OSTI ID:6122862

Smith, P D; Pelessone, D

A method of formulating material models for viscoelastic analysis using the finite-element method is presented. The method, named consistent linearization, includes the influence of creep in the material stiffness in a theoretically ideal manner. This method has been applied to the linear viscoelastic analysis of graphite subject to irradiation. Previously, using the initial strain method, short time steps had been required to avoid a numerical instability associated with the rapid transient creep. Using the consistent linearization method a factor of 15 reduction in computer time was achieved for the same accuracy.

• Research Organization: GA Technologies, Inc., San Diego, CA (USA)
• DOE Contract Number: AT03-76ET35300
• OSTI ID: 6122862
• Report Number(s): GA-A-16978; CONF-830805-44; ON: DE83012753
• Resource Relation: Conference: 7. international conference on structural mechanics in reactor technology, Chicago, IL, USA, 22 Aug 1983; Other Information: Portions are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
HTGR TYPE REACTORS
FUEL ELEMENTS
SOLIDS
CREEP
STRESS ANALYSIS
FINITE ELEMENT METHOD
GRAPHITE
CARBON
ELEMENTAL MINERALS
ELEMENTS
GAS COOLED REACTORS
GRAPHITE MODERATED REACTORS
MECHANICAL PROPERTIES
MINERALS
NONMETALS
NUMERICAL SOLUTION
REACTOR COMPONENTS
REACTORS
656000* - Condensed Matter Physics
210300 - Power Reactors
Nonbreeding
Graphite Moderated