  This paper aimed at extending a model developed by Ladeveze to capture
thermal expansion and coupled thermo-mechanical phenomena, as such as those
encountered at elevated and extreme temperatures. In the new model a linear
thermal expansion coefficient is added to equation of state to account for the
thermal to mechanical coupling effects. The mechanical to thermal effects are
introduced by assuming an internal heat generation due to residual strain
effects. The constitutive relations of the coupled thermo-mechanical behaviors
of ceramic matrix composite material model were incorporated into Abaqus finite
element code as user defined material software. An extension of the methodology
presented by Letombes to calibrate the ceramic matrix composite damage model
parameters based on a woven silicon-carbide silicon-carbide material developed
by Safran Group. Feasibility tests (tension-compression, tension-tension
cyclic, simple tension tests) based on a dog bone and open hole specimen tests
demonstrated a good capturing of nonlinear as well as coupled
thermos-mechanical behaviors in the silicon-carbide silicon-carbide material.
