Thank you for your input KeinDeSmet. I looked further into the mater and came to these conclusions.
In the past (Geostar) the input density was Specific Weight (or Weight Density). γ = ρg
Solidworks Simulation uses Mass Density lb/in^3. ρ = m/V
Most material property data given by a manufacturer or material handbook are in "weight" density (lb/in3)
For a static study, like applying pressure, the density is immaterial, whether it is in "weight" density or "mass" density.
However, when inputting values for custom material in...
