After mesh splitting or general remeshing, solutions from the previous mesh are mapped to the new mesh on the next substep after splitting or remeshing. Residual forces due to differences in the mesh are applied along with the load increments of the substep.

If there is convergence difficulty, the program may first reduce the time increment for the substep to scale back the load to achieve convergence. Then, if the minimum time increment for a substep is reached and the program still cannot achieve convergence, it attempts to balance the residuals across two or more substeps. (The process is the same as that described in Balancing Residual Forces for rezoning; however, it cannot be controlled via MAPSOLVE.)

If a substep is introduced solely to balance residual forces, the following message (or similar) is written to the output file:

*** LOAD STEP     1   SUBSTEP    26  NOT COMPLETED.  CUM ITER =     84
*** BEGIN BISECTION NUMBER   2    NEW REBALANCE FACTOR INCREMENT=  0.50000

Substep information (rebalancing only) is not included in the monitor file (jobname.mntr). Also, nonlinear adaptivity criteria are not checked at the end of each substep during rebalancing; therefore, the mesh remains unchanged.

Following the solution, the number of remeshings (if any) is reported in the output file. For example: