Page 195 - Finite Element Modeling and Simulations with ANSYS Workbench

180 Finite Element Modeling and Simulation with ANSYS Workbench

Modeling tips: A model may be subjected to body forces such as gravitational or
radial centrifugal/inertia forces, in addition to the hydrostatic pressure load.
To consider such forces, the density of the structure’s material needs to be
given as an input, and the forces are typically calculated as follows:

2
r
f r = ρω , equivalentradialcentrifugal/inertialforce ;
f z =−ρ g, grravitationalforce;
where ρ is the mass density and g the gravitational acceleration (=9.8 m/s ).
2
Take the following steps to add body forces to the fountain model. First, double-
click on Density in Physical Properties Toolbox. Enter 2.38e3 for Density in
the Properties of Outline Row 3: Concrete.

Next, refresh the Model cell of Project Schematic after the above change is made
on the Engineering Data cell. Double-click on the Model cell to launch the
Static Structural Program.
In the Project Outline shown below, right-click on Static Structural (A5). Choose
Insert and then Standard Earth Gravity.