Reply To: Help to do quasistatic analysis in static structural module

[peteroznewman]

You have assigned the material WATER3, which was defined using Isotropic Elasticity, to the Inside body. This is a big mistake because WATER3 has a huge Shear Modulus, while real water has zero Shear Modulus. This will cause a large error in your results.  Delete the Inside body and instead use the faces of the solid elements that define the inside cavity surface to create HSFLD242 elements.

HSFLD242 is used to model fluids that are fully enclosed by solids (containing vessels). The hydrostatic fluid element is well suited for calculating fluid volume and pressure for coupled problems involving fluid-solid interaction. The pressure in the fluid volume is assumed to be uniform (no pressure gradients). Hydrostatic fluid elements are overlaid on the faces of 3D solid or shell elements enclosing the fluid volume.