[SUNGAL]

Hello everybody! There is a rectangular plate fixed on the middle of two opposite sides.Fastening like bearing without friction.Given Joint type Revolute. Calculation is non-stationary (Transient Structural). At the beginning of the calculation, a rotation moment about the axis is applied to the plate for 1 second. The next 9 seconds of the calculated time the moment is absent and the plate rotates by inertia. As a result of calculation we have Total Deformation growing during all calculation, and Elastic Strain and Stress after removal of the moment and until the end of calculation are equal to 0. How to fight it?