Thank you George for the reply. So for any analysis until we use the control card for Implicit, will it always run an explicit analysis?? Also I have one more question, what is the error and mass error here ?
CYCLE TIME TIME-STEP ELEMENT ERROR I-ENERGY K-ENERGY T K-ENERGY R EXT-WORK MAS.ERR
3500 0.3713E-02 0.1048E-05 SHELL 106239 0.1% 0.1060E+07 0.7229E+08 0.1347E+05 -0.2986E+06 0.000
Is it the error, the error of the external force to the internal force?