Gravity dialog box

Type
Type	Specifies how the gravity load is defined.Magnitude and directionDefines a gravity load with a specified magnitude and a direction specified by a vector.ComponentsDefines acceleration at each component in terms of a specified coordinate system. You can use the global coordinate system for the model, or specify a different local coordinate system. For example, if you choose a local Cartesian coordinate system, you can enter an acceleration magnitude value for each of the X, Y, and Z components.Gravity ZX, Gravity XY (Simcenter Nastran and Abaqus): Defines acceleration at each component in terms of the axisymmetric plane and rotational axis.
Destination Folder
Load Container	Specifies the folder in the Simulation Navigator in which the boundary condition will be stored. The list includes the root container and existing folders that you created using the New Folder command. Examples of a root container include Load Container, Constraint Container, and Simulation Object Container.
Folder Manager	Displays a hierarchical listing of existing folders. To create a new folder, right-click any level of the hierarchy and choose New Folder.
Model Object
Select Object	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.
Stacked Smart Selector Methods	Opens the Smart Selector Methods dialog box where you can specify a progression of smart selection filters.For more information, see Smart Selector Methods dialog box.
Magnitude
Appears when Type is set to Magnitude and direction.
Acceleration	Specifies the magnitude of the acceleration as an expression or field. For more information, see Additional magnitude options.
Direction
The following options appear when Type is set to Magnitude and direction.
Specify Vector	Lets you specify a vector to define the direction in which to apply the load.For more information, see Vector dialog box.
The following option appears when Type is set to Components.
CSYS	Sets the coordinate system that the software uses to apply the load. You can select the Global Cyclic Analysis or the Global coordinate system, or you can create one of the following types of local coordinate systems: Cartesian, Cylindrical, Spherical.Note: The Global Cyclic Analysis coordinate system is available only if it is defined in the FEM.
Components
The following options appear when Type is set to Components, Gravity ZX, or Gravity XY.
Acceleration	Specifies the magnitude of the acceleration.
Ax, Ay, Az****Ar, At, Az****Ar, At, Ap****Radial Acceleration, Axial Acceleration	Specifies the acceleration magnitude for each component. The components available depend on the coordinate system type.
The following options appear when Magnitude is set to Field.
Specify Field	Lets you select or define a field to define acceleration magnitude.
Scale Factors	For each component, specifies the scale factor to apply to the field.The components available depend on the coordinate system type.

How do I

Define a gravity load using magnitude and direction

Define a gravity load using components

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Gravity

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Gravity dialog box, Simcenter 3D 2021.1 Series

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