Micromorphic crystal plasticity approach to damage regularization and size effects in martensitic steels

A reduced micromorphic model is formulated in the scope of crystal plasticity and crystalline cleavage damage. The finite strain formulation utilizes a single additional microvariable that used to regularize localized inelastic deformation mechanisms. Damage as strain-like variable fit generalized microslip and/or microdamage based formulation. Strategies treating slip damage simultaneously separately non-local variables are investigated. accounts for size-effects affect hardening behavior allow predict width localization bands. results show extension introduces extra-hardening vicinity grain boundaries zones polycrystals. At level band regularized. Two ways dealing with were identified: An indirect method on controlling bands act initiation sites direct which flow regularized together or from plastic slip. Application real martensitic steel microstructure