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	+ NASA Home + NASA GRC Home + R&T Directorate Home + Structures Division Home + Life Prediction Branch Home + Software Home		The integrated multiscale Micromechanics Analysis Code (ImMAC) suite of software tools enables, for the first time, coupled multiscale analysis of advanced (smart and composite) structures (arbitrary or stiffened), that is from the global to the composite ply to the fiber and matrix constituent scales. Local phenomena (e.g., fiber failures, matrix damage/ inelasticity, interfacial debonding) can be modeled based on the local fields throughout the structure, and the effects on the global structural response can be simulated. Smart material/structural analysis is accomplished via inclusion of recently-developed constitutive models for shape memory alloys and expansion of the thermo-elastic formulation to admit fully coupled thermo-piezo-electro-magnetic effects. The ImMAC suite is composed of three primary programs: MAC/GMC, FEAMAC and HyperMAC: MAC/GMC Micromechanics Analysis Code with Generalized Method of Cells composite and smart material analysis program, which constitutes the core of the ImMAC suite. This software determines the effective properties and response of composite materials and laminates based on the arrangement and properties of the constituent materials. MAC/GMC is also specifically designed to integrate with higher scale structural analysis methods. + Visit the MAC/GMC website FEAMAC The integration of the MAC/GMC core capabilities within the ABAQUS commercial finite element software package. This multi-scale software enables analysis of structures composed of composite materials by calling a MAC/GMC library directly from ABAQUS to represent the composite material at each integration point in the finite element model. + Visit the FEAMAC website HyperMAC The integration of the MAC/GMC core capabilities within the HyperSizer stiffened structural analysis and local structural sizing package. As in FEAMAC, MAC/GMC is called by HyperSizer to represent composite materials at the ply level within stiffened structural analyses. HyperMAC also provides a graphical user interface (GUI) for solving stand-alone MAC/GMC problems. + Learn more about HyperMAC (Collier Research and Development Corporation website) For additional information on this software, please contact: Steven M. Arnold Phone: (216) 433-3334 e-mail: Steven.M.Arnold@nasa.gov
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