Dynamic (Time History) output report generates the following 2 Nos. of (OCC) COM# 1 type Load cases.

Load Cases are:
CASE 1) (OCC) COM#1 Max resp.
CASE 2) (OCC) COM#1 1000 msec

We need to know the maximum dynamic forces and moments at restraints (Pipe supports).

It has been observed that the above Load Case no. 2 (1000 msec) is generated by CAESAR-II irrespective of the relief time cycle, i.e. even if the complete cycle is either from 0 msec - 2000 msec or from 0 msec - 900 msec.

Query 1) (OCC) COM#1 1000 msec is it a default simulation (Load case) by CAESAR-II ?
- Probably answered as YES above just a confirmation from all readers.

Query 2) Dynamic forces & moments on restraints in above mentioned CASE 2 is less conservative as compared to CASE 1. So what is the purpose of obtaining (OCC) COM#1 1000 msec restraint report ?

Query 3) In order to obtain max. dynamic forces & moments which load case report has to be selected out of the two cases ?

Query 4) Even if the total relief cycle is 900 msec, the restraint report with (OCC) COM# 1Max. resp. gives higher loads at a particular msec compared to (OCC) COM#1 1000 msec. Please clarify?

Regards

Sandeep