Acceleration dialog box

Type
Type	Controls how you define the static acceleration load:Whole Model-ComponentsLets you define an acceleration on the entire model by specifying the components of the acceleration in terms of a specified coordinate system. You define a single component variation using commands in the Scaling group.To apply the acceleration to models in both the Simcenter Nastran Axisymmetric Structural and Structural environments , select Whole Model-Components ZX or Whole Model-Components XY.For more information, see the Simcenter Nastran ACCEL bulk data entry.Whole Model-Magnitude and Direction Lets you define an acceleration on the entire model by specifying the magnitude of the acceleration and the direction of the acceleration. You define a single component variation using commands in the Scaling group.To apply the acceleration to models in both the Simcenter Nastran Axisymmetric Structural and Structural environments, select Whole Model-Magnitude and Direction ZX or Whole Model-Magnitude and Direction XY.For more information, see the Simcenter Nastran ACCEL bulk data entry.Components Lets you define the magnitude of the acceleration on selected entities in terms of a specified coordinate system. To apply the acceleration to models in both the Simcenter Nastran Axisymmetric Structural and Structural environments, select Components ZX or Components XY.For more information, see the Simcenter Nastran ACCEL1 bulk data entry.Magnitude and DirectionLets you define the acceleration for selected entities by specifying the magnitude and direction of the load.To apply the acceleration to models in both the Simcenter Nastran Axisymmetric Structural and Structural environments, select Magnitude and Direction ZX or Magnitude and Direction XY.For more information, see the Simcenter Nastran ACCEL1 bulk data entry.NormalLets you define the acceleration with a magnitude and a +/– direction normal to the selected geometry or element faces.To apply the acceleration to models in both the Simcenter Nastran Axisymmetric Structural and Structural environments, select Normal ZX or Normal XY.For more information, see the Simcenter Nastran ACCEL1 bulk data entry.Node ID TableLets you use a node ID table to define the acceleration value at each node. A node ID table contains a list of node IDs and corresponding scale factors for each nodal component (X,Y,Z). For each node in the node ID table, the load magnitude at the component is multiplied by the scale factor.For more information, see the Simcenter Nastran ACCEL1 bulk data entry.
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.To view a hierarchical list of existing folders, click Folder Manager . To create a new folder, right-click any level of the hierarchy and choose New Folder.
Model Object
Appears when Type is set to anything except Node ID Table.
Group Reference	Appears when Type is set to Components, Magnitude and Direction, or Normal. Lets you apply the acceleration to a group.For more information, see Group Reference options.
Select Object	Lets you select the geometry or FE entities on which the load will be applied.
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.
Excluded	Appears when Type is set to Components, Magnitude and Direction, or Normal. Lets you remove individual entities from within the selected object.
Magnitude
Appears when Type is set to Whole Model - Magnitude and Direction, Magnitude and Direction, Normal, or Node ID Table.
Acceleration	Sets the magnitude of the acceleration.For more information, see Additional magnitude options.
Direction
CSYS	Appears when Type is set to Whole Model-Components, Components, or Node ID Table.Sets the coordinate system that the software uses to apply the acceleration. 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.
Specify Vector	Appears when Type is set to Whole Model - Magnitude and Direction or Magnitude and Direction.Defines the direction of the load.For more information, see Vector dialog box.Click Reverse Direction to reverse the direction of the vector.
Components
Appears when Type is set to Whole Model - Components or Components.
Magnitude	Specifies the magnitude of the load.
Ax, Ay, Az****Ar, At, Az****Ar, At, Ap****Radial, Normal, Axial	Appear when Magnitude is set to Expressions.Specifies the magnitude for each component of the acceleration. The components available depend on the specified coordinate system type.
Specify Field	Appears when Magnitude is set to Field.Lets you select or define a field.
Scale Factors	Appears when Magnitude is set to Field.Sets the scale factor (for each component) to apply to the field.The components available depend on the coordinate system type.
Scaling
Appears when Type is set to Whole Model-Components or Whole Model-Magnitude and Direction.
Direction	Sets the direction of the variation of the acceleration.
Scale Factor	Specify FieldDefines a scale factor for the acceleration variation, in terms of a field.
Load curve (LCID)	Available when the specified solver is LS-DYNA.Lets you select or define a DEFINE_CURVE modeling object that specifies how the acceleration load varies with time.
Load curve for dynamic relaxation (LCIDDR)	Available when the specified solver is LS-DYNA.Lets you select or define a DEFINE_CURVE modeling object that specifies how to ramp the load during the dynamic relaxation phase of the analysis. After the dynamic relaxation phase, the software holds the load value constant until the solution converges..
Distribution
Appears when Type is set to anything except Node ID Table.
Method	Specifies how the acceleration is distributed over the selected objects:ConstantDistributes the acceleration as a constant value across the selected objects.SpatialUses a unitless field to map the acceleration to the nodes.A field is always mapped to global or Cartesian coordinates, even if it was defined in cylindrical or spherical coordinates.
Distribution Field
Appears when Distribution is set to Spatial.
Specify Field	Defines how the acceleration is distributed over the nodes in the selected area.
Scaling ID Table
Appears when Type is set to Node ID Table.
Specify Field	Lets you use a node ID table to scale the acceleration for the components of specific nodes.
Card Name	Displays the name of the solver card for the load.

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Static acceleration load

Acceleration dialog box, Simcenter 3D 2021.1 Series

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