Documentation of the thermo-viscoelastic code TEVCO. Memorandum report RSI-0039

Technical Report · Tue Sep 30 04:00:00 EDT 1975

DOI:https://doi.org/10.2172/7308137· OSTI ID:7308137

Callahan, G. D.

Two versions of TEVCO currently exist, one version adapted for IBM 360/91 and the other for a CDC 3400 computer system. TEVCO may solve any of the following types of problems in either two dimensional X-Y or axially-symmetric R- theta-Z geometry utilizing constant strain triangular elements with stress or displacement boundary conditions specified: elastic, thermoelastic, viscoelastic, and thermo/viscoelastic. In addition, the above problems may involve geometric nonlinearities. Meterial nonlinearities may be provided for with minor program modifications. The two-dimensional X-Y geometry uses the plane strain assumption. Plane stress may be considered by merely replacing Poisson's Ratio (..nu..) by ..nu../(1 + ..nu..) in the material property matrix. The flow chart illustrates the direct solution technique utilized for the most complex case (e.g. thermo/viscoelastic with geometric nonlinearities). Linear strain triangles (LST) and isoparametric quadrilaterals are being incorporated into the code. (DLC)

• Research Organization: RE/SPEC, Inc., Rapid City, SD (USA)
• OSTI ID: 7308137
• Report Number(s): ORNL/Sub-4269/17
• Country of Publication: United States
• Language: English

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