Kinematic hardening of trusses

摘要: Polycrystalline materials are modelled using plastic trusses. The rods of the truss simulate slip systems a single crystal while geometry controls interaction between different systems. For calculations evolution yield locus in space nodal forces, i.e. generalized stress space, due to geometric variation truss, (kinematic hardening) “direct” formulation is looked for, which only quantities involved. It found that for an adequate approach, besides forces and velocities also moments rotations have be introduced. If this result would transferred polycrystal then it mean kinematic hardening could described, sensible way by means Cosserat continuum only. Comparing loci direct with calculated indirect method good agreement achieved.