ANSYS错误什么意思求解答?

*** WARNING *** CP = 1675.141 TIME= 09:56:43 The unconverged solution (identified as time 1 substep 999999) is output for analysis debug purposes. Results should not be used for any other purpose. Element Output Element= 1000 Cum. Iter.= 680 CP= 1675.219 Time= 1.0000 Load Step= 1 Substep=999999 Equilibrium Iteration= 22. F Convergence Norm= 85042. Previous Norm= 87180. U Convergence Norm= 0.35617E-02 Previous Norm= 0.37919E-02 麻烦各位大神看看这个错误是为什么??