%0 journal article %@ 0020-7683 %A Bargmann, S.,Reddy, B.D.,Klusemann, B. %D 2014 %J International Journal of Solids and Structures %N 15-16 %P 2754-2764 %R doi:10.1016/j.ijsolstr.2014.03.010 %T A computational study of a model of single-crystal strain-gradient viscoplasticity with an interactive hardening relation %U https://doi.org/10.1016/j.ijsolstr.2014.03.010 15-16 %X The behavior of a model of single-crystal strain-gradient viscoplasticity is investigated. The model is an extension of a rate-independent version, and includes a new hardening relation that has recently been proposed in the small-deformation context (Gurtin and Reddy, 2014), and which accounts for slip-system interactions due to self and latent hardening. Energetic and dissipative effects, each with its corresponding length scale, are included. Numerical results are presented for a single crystal with single and multiple slip systems, as well as an ensemble of grains. These results provide a clear illustration of the effects of accounting for slip-system interactions.