MICSTRAN - MICROMECHANICAL COMBINED STRESS ANALYSIS

The Micromechanical Combined Stress Analysis (MICSTRAN) code from NASA
Langley Research Center provides the materials engineer with a
user-friendly, personal computer based tool to calculate overall composite
properties given the constituent fiber and matrix properties. MICSTRAN can
calculate internal stresses within a composite ply under combined
thermomechanical loading. It assumes that the fibers have a circular
cross-section and are arranged either in a repeating square or diamond
array pattern within a ply. It uses a classical elasticity solution
technique that has been demonstrated to calculate accurate stress
results.

Input to MICSTRAN consists of transversely isotropic fiber properties and
isotropic matrix properties such as moduli, Poisson's ratios, coefficients
of thermal expansion, and volume fraction. Loading input consists of a
temperature change and ply stresses. All six stress components can be
given to analyze a complete 3D stress state in a ply. Output consists of
overall thermoelastic constants and stresses. Stress output can be
requested along the fiber-matrix interface, the model boundaries, circular
arcs, or at user-specified points located anywhere in the model.

MICSTRAN, inventory number LAR-15005, is written in FORTRAN 77 for IBM PC
series and compatible computers running MS-DOS. This program is designed
to run on Microsoft WINDOWS 3.0 or later and contains calls to the
Microsoft QuickWin libraries that are available with Microsoft FORTRAN
v5.1. A sample executable is included on the distribution media. It
requires 2.5Mb of RAM for execution. An electronic copy of the User Manual
is included on the distribution media in Microsoft WORD for WINDOWS
format. Hard copy documentation consists of the User Manual plus a 33-page
theory manual, NASA Technical Memorandum 107575. Program $300;
documentation $19.

COSMIC, The University of Georgia
382 East Broad St, Athens, GA 30602-4272
(706) 542-3265;  Fax: (706) 542-4807

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