The nonlinear behavior of a high-temperature metal-matrix composite (HT-MMC) was simulated by using the METCAN (Metal Matrix Composite Analyzer) computer code. The simulation started with the fabrication process, proceeded to thermo mechanical cyclic loading, and ended with the application of a monotonic load. Classical laminate theory and composite micromechanics and macromechanics are used in MET CAN, along with a multifactor interaction model for the constituents' behavior. The simu lation of the stress-strain behavior from the macromechanical and the micromechanical points of view, as well as the initiation and final failure of the constituents and the plies in the composite, was examined in detail. It was shown that, when the fibers and the matrix were perfectly bonded, the fracture started in the matrix and then propagated with increas ing load to the fibers. After the fibers fractured, the composite lost its capacity to carry ad ditional load and fractured.