Define a gravity load using components

The Components type defines a gravity load in terms of a global or local coordinate system. For example, if you choose a local Cartesian coordinate system, you can enter acceleration magnitude for each of the X, Y, and Z components.

1. Choose Home tab→Loads and Conditions group→Gravity .

2. In the Gravity dialog box, select Components from the Type list.

3. Because you must apply a gravity load to the entire FE model, in the Model Object group, you do not need to use the Select Object option to select any geometry. The software automatically applies the load to the entire model.

4. In the Direction group, select the coordinate system to use to define the load.Select Global to define the gravity load in terms of the existing global coordinate system.Select Cartesian, Cylindrical, or Spherical to define the gravity load in terms of a local Cartesian, cylindrical, or spherical coordinate system that you specify.Click CSYS Dialog to use the options in the CSYS dialog box to create the coordinate system, or select an option from the CSYS list to specify the method to use to define the coordinate system, such as Inferred or Plane and Vector.For more information, see CSYS dialog box.

5. In the Components group, define the magnitude of each component in one of these ways:Select Expressions to use a constant value or expression to define the magnitude for each component. For more information, see Expressions. Select Field to define a magnitude that varies with frequency, time, or temperature. For more information, see Using fields and expressions to define boundary conditions. For each component (for example, Ax, Ay, Az), choose a scale factor.

6. Click OK.The load is applied to the model.

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Define a gravity load using magnitude and direction

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