Closed ewyser closed 10 months ago
see https://doi.org/10.1016/j.compgeo.2021.104284
add plastic return for 3D, see commits ff57e5a6cb0838ab0f88eeadbbe36c7ec755ffea and 05b1b5985c1871f5441d2bd294f0dfc261d9c004
DP return mapping now valid under finite deformation