The micro-damage evolution of TiC particle reinforced titanium matrix composites was analyzed, and
a dynamic constitutive model with damage evolution was established. When TiC particle reinforced titanium matrix
composites withstands tensile loads, micro-cracks expand in form of wing cracks through the matrix. Based on the
wing crack growth model, a biaxial damage evolution constitutive was set up. And by degenerating, the uniaxial tension
damage evolution constitutive was gotten. It is assumed that microcrack nucleation law accords with Weibull distribution,
then a macroscopic and microscopic combined dynamic constitutive model in a one-dimensional stress state
was established, which can reflect the damage evolution of TiC particle reinforced titanium matrix composites. Model
simulation results agree well with the experimental curves.