why did Time step is too small in stiffbs?
Hi, everyone. The following message appears when I activate the heat mass coupling in DPM panel. "Time step too small in stiffbs:
Time step too small in stiffbs: dt = 3.819282e21, t = 4.316239e04 0 y = 2.000002e11 dy/dt = 1.075370e+03 1 y = 2.312000e+02 dy/dt = 0.000000e+00 Time step too small in stiffbs: dt = 3.589703e21, t = 4.311432e04 0 y = 2.000000e11 dy/dt = 1.076570e+03 1 y = 2.312000e+02 dy/dt = 0.000000e+00 Time step too small in stiffbs: dt = 3.513279e21, t = 4.311310e04 0 y = 2.000002e11 dy/dt = 1.076599e+03 1 y = 2.312000e+02 dy/dt = 0.000000e+00 Can you explain it?Thank you very much! 
Hey, satum. I met the same problem. BTW, have you found the reason? Thank you

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