The flow of information from the topmost problem down to the (crystal) plasticity constitutive response and back can be restricted to very few items as (partly) shown in Figure FIFA STREET - Xbox. The latter keeps track of the grain microstructure on the basis of internal variables and considers any relevant deformation mechanism(s) to provide the plastic velocity gradient $\tnsr L_\text p$ driven by $\tnsr S$.īoth are incorporated as the fourth level in the hierarchy. The former links the elastic deformation $\tnsr F_\text e$ to the (second Piola–Kirchhoff) stress $\tnsr S$. This, finally, depends on the actual elastic and plastic constitutive laws. To arrive (under given boundary conditions) at a solution for equilibrium and compatibility in a finite strain formalism one requires the connection between the deformation gradient $\bar_\text p$, is calculated. The overall simulation task can thus be conceptually split to four essential levels as illustrated in Figure TANGZHOU 2Pcs/Set Diesel Heater Burner Gasket ï¼Strainer Car Va from top to bottom: The reason is the strongly anisotropic plastic response of each individual grain in the polycrystalline aggregate, thus complicating the problem by many-body interactions.Īs a necessary basis for its solution, the physical mechanisms that carry the plastic response have to be captured and incorporated to sufficient accuracy at the scale of the individual crystallite.įigure 1: schematic representation of the hierarchy at a material point.įace Shield(2 Packs) Safety Protect Eyes and Face with Protectiv This is not straightforward in case of appreciably textured and/or multiphase materials and along variable loading paths.
Crystal plasticityĪ proper description of plastic deformation in polycrystalline materials (in particular metals) has to take into account the multiscalar hierarchy inherent in this process.Īt the component engineering scale a valid material description is sought. Its main purpose is the simulation of crystal plasticity within a finite-strain continuum mechanical framework. Īt the core of DAMASK is a flexible and hierarchically structured model of material point behavior for the solution of elastoplastic boundary value problems along with damage and thermal physics. This site describes DAMASK 2.03 the current release version of DAMASK! For information on the upcomming DAMASK 3 release visit.