In the calculation of 3D material models, the principal strains are calculated correctly. It is not possible to read results created with version 1.1.1 and older of the program. Only input data are backward compatible, so it is necessary to re-calculate old data when new version of the program is installed. The necessary technology is already implemented in new versions, so starting with the version 1.1.2, it will be possible to read data stored in version 1.1.2 and younger. Some materials do not support Tangent predictor.
Elastic stiffness is used instead.
CC3DCementitious, CC3DNonLinCementitious tangent stiffness supported only for cracking. CC3DBiLinearSteelVonMises, CC3DDruckerPragerPlasticity tangent stiffness not supported. This may be especially a problem in case of load-displacement diagram monitoring. It is recommended not to monitor reaction or forces at geometrical joints that belong to more than one region. If it is neccessary then the reaction force should be monitored at all nodes with identical coordinates.