A Thermoelastoplastic Selfconsistent Homogenization Method For Intergranular Plasticity With Application To Thermal Ratcheting Of Tatb Kane C Bennett Miroslav Zecevic Darby J Luscher Ricardo A Lebensohn by Kane C. Bennett & Miroslav Zecevic & Darby J. Luscher & Ricardo A. Lebensohn 101186/S4032301901396 instant download after payment.

A novel thermo-elastoplastic self-consistent homogenization model for granular
materials that exhibit inter-granular plasticity is presented. The model, TEPSCA, is made
possible by identifying a new inter-granular plastic Eshelby-like tensor. A
micromechanical model of interfacial yielding between grains of a Mohr–Coulomb
type is provided, which is relatable to the description of imperfect interfaces within the
paradigm of self-consistent homogenization. The local grain constitutive laws are
consistent with the description of an interphase layer comprised of local pore volume
between grains, such that inelastic inter-particle displacements are directly relatable to
changes in bulk porosity, i.e., dilation. The model was developed for the purpose of
modeling thermally induced plasticity—the phenomenon known as thermal
ratcheting or “ratchet growth”—of composites made from the high explosive
triaminotrinitrobenzene (TATB). Model simulations are compared to ratchet growth
measurements during cyclic thermal loading of a TATB pellet under stress-free
conditions.