Micromechanics of elastoplastic porous polycrystals: Theory, algorithm, and application to osteonal bone

Since its advent in the 1960s, elastoplastic micromechanics has been confronted by continuous challenges, as the classical incremental elastoplastic tangents are known to deliver unrealistically stiff material responses. As a complement to the various “secant” approximations targeting this challenge, we here develop a theoretical framework based on an extension of Dvorak's transformation field analysis, comprising the derivation of concentration...