  We present a material (strength) model for describing the deformation of PBX
under quasistatic mechanical and thermal loadings. It is a
viscoelastic-viscoplastic model incorporating the effects of pressure and
temperature on the strength of PBX. The model is calibrated using uniaxial
tension and compression tests. Using FEM simulations in Ls-Dyna, we validated
the model with creep and relaxation tests. To further validate the model, we
performed an experiment with thermally loaded, biaxially strained, sample and
measured its deformation using Digital Image Correlation method.
