Combining a Restart with Element Death and Birth
A user may want to solve a very large model with multiple load steps. A restart can work from the end of one of the load steps to then consider a different loading history for subsequent load steps, saving the time required to run the load steps prior to the restart.
This video illustrates a test of a model in which element death and birth are used in combination with a restart, and also a change of materials. APDL commands are used to implement the EKILL and EALIVE commands for element death and birth, plus an MPCHG command to modify assigned materials at the time of the restart. One of the bodies has its elements killed before the first load step is solved, and then made alive for the second load step. The method was found to work after a restart from the end of the first load step.