Abstract
A previously derived cyclic neutral thermoviscoplasticity theory for fi brous metal-matrix composites (Yeh and Krempl [1]), which combines the vanishing fiber diameter (VFD) model with the thermoviscoplasticity theory based on overstress (TVBO) is specialized for transversely isotropic, thermoelastic fibers and an isotropic, thermovis coplastic matrix. Numerical experiments are used to illustrate the predictive capability of the theory. Simulations include the influence of volume fraction on the monotonic and cyclic loading behavior in the fiber and transverse directions with creep holds for B/A1 and B/Ti unidirectional composites and thermal cycling of B/A1. The three-dimensional theory permits the calculation of the actual Poisson's ratio in the tests. The results compare favor ably with sparsely available experimental results.
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