Bolted Nozzle flange (Saturn v5 rocket)

Problem statement :

The Saturn V's first stage was powered by five F1 engines. In this exercise, we analyze the bolted flange joint that connected the mid and lower parts of the F1 engine nozzle. The image below shows a picture of the F1 engine and the corresponding model in ANSYS. Note that the ANSYS model includes only the mid and lower parts of the nozzle and the bolted flange joint connecting them.