Reply To: Seismic analysis of a water filled tank

[pgl]

This depends on how important the water sloshing is to your application: If the tank is completely full, you could assume the water is a solid. That might be an oversimplification. You could also assume that the tank is a rigid body. For best results you'll need to perform a two way fluid-structural interaction simulation. That will capture the movement of the fluid and the deformation of the tank.There's quite a few published tutorials example on YouTube, for example, here's an AIM FSI tutorial to get you started:

https://youtu.be/Vdvlg5yzVDc?list=PL0lZXwHtV6OkiLQmjjcgoydHUTiIvmV0N: 

Also, here's two videos of a seismic simulation of fluid filled tanks:  

https://www.youtube.com/watch?v=hZ_FUn2q4y0

https://www.youtube.com/watch?v=2WsnW9J1qHU