June 13, 2021 at 10:55 am
peteroznewman
Subscriber
If your structure encloses a volume, you could put fluid elements in that volume to compute the volume during the solution. In the link below, the fluid exerts a pressure on the structure because it is an incompressible liquid, but you can define the fluid properties to be compressible and exert no pressure on the structure.
https://forum.ansys.com/discussion/21872/how-do-you-consider-the-properties-of-air-in-a-static-structural-simulation
https://forum.ansys.com/discussion/13075/fluid-contained-within-a-structural-volume