Prescribed Acceleration, Interface

The node adds a boundary condition on the top or bottom face of the shell where the acceleration is prescribed in one or more directions. This condition is applicable for time- dependent and frequency domain studies. It is possible to prescribe an acceleration in one direction, leaving the structure free in the other directions. The node is a constraint and overrides any other constraint on the same selection.

To prescribe accelerations on the actual material layers, use Prescribed Acceleration.

Interface Selection

Select the interface or interfaces for which this constraint is to be added.

Table 6-30: Interface Selections; Prescribed Acceleration, Interface
Selection	Apply To	Selection of Individual Interfaces
Boundary	When added: Exterior interfaces.	When Selected Interfaces is selected. Only exterior interfaces can be selected.

If the same layer is selected in two nodes being active on the same boundary, the second definition will override the previous.

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All other settings for the node are described in the documentation for Prescribed Acceleration in the Solid Mechanics interface.

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For a general description of layer and interface selections, see The Shell Properties and Interface Selection Sections.

Location in User Interface

Context Menus

Ribbon

Physics tab with selected: