2. Features available in semi-static mode and absent in transient

Here, we will mainly address the problem of harmful laws, in a local version. Indeed, non-local approaches, like GRAD_VARI, are not dynamically available. It will therefore be necessary to pay particular attention to defining a minimum mesh size adapted to avoid observing excessive localization phenomena.

Then, linear search methods (mixed or not) are not authorized in dynamics. This lack should be put into perspective, knowing that the attempts to apply these methods to studies of reinforced concrete structures in dynamics have not put forward a significant contribution to convergence, contrary to what is observed in a semi-static way. It should be noted, however, that no theoretical argument would prohibit the use of these methods in dynamics.

Finally, the control techniques available in STAT_NON_LINE (arc length, for example) are forbidden in dynamics because they then do not make sense.