@misc{HerzogMeyerWachsmuth, author = {Herzog, Roland and Meyer, Christian and Wachsmuth, Gerd}, title = {B- and Strong Stationarity for Optimal Control of Static Plasticity with Hardening}, series = {SIAM Journal on Optimization}, volume = {23}, journal = {SIAM Journal on Optimization}, number = {1}, issn = {1052-6234}, doi = {10.1137/110821147}, pages = {321 -- 352}, abstract = {Optimal control problems for the variational inequality of static elastoplasticity with linear kinematic hardening are considered. The control-to-state map is shown to be weakly directionally differentiable, and local optimal controls are proved to verify an optimality system of B-stationary type. For a modified problem, local minimizers are shown to even satisfy an optimality system of strongly stationary type.}, language = {en} }