Page 127 - Using ANSYS for Finite Element Analysis A Tutorial for Engineers
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114 • Using ansys for finite element analysis
It is necessary to define the direction and magnitude of gravity for this
problem. Select:
Solution > Define Loads > Apply > Structural > Inertia > Gravity...
The following window will appear. Fill it in as shown to define an
acceleration of 9.81m/s2 in the y direction.
Note: Acceleration is defined in terms of meters (not mm as used
throughout the problem). This is because the units of acceleration and
mass must be consistent to give the product of force units (Newton in this
case). Also note that a positive acceleration in the y direction stimulates
gravity in the negative Y direction. There should now be a red arrow point-
ing in the positive y direction. This indicates that acceleration has been
defined in the y direction: DK,1, ALL,0, ACEL,9.8. The applied loads
and constraints should now appear as shown in the figure as follows:
