An excitation is generated from an input load. An excitation acts on an SEA subsystem
or junction, whereas an input load acts on a SEAM
element or connection.
Figure 1. SEA Excitations Ribbon
SEAM calculates subsystem power inputs at each frequency
band based on the input load specifications. Figure 2. Create Seam Excitations Entity Editor
Name
Enter a unique name.
ID
Enter a unique ID.
Input Load
Power input to the model from vibration and acoustic sources.
Config type
A predefined type which describes the general form of the Input Load.
The Input Load type is chosen from the Config drop-down menu.
Note: The Input Load type determines the Input Load
parameters, so the Input button remains inactive until an Input Load
type is selected.
Power Input
The power into an element is directly specified. Use the
Power Input type when simple power transfer functions are
desired or when detailed calculations of input power have
been performed outside of SEAM.
This type is particularly useful when power input has been
measured during a test.
Reverberant
The reverberant vibration or sound pressure level is
specified directly at an element. SEAM calculates the required input
power to achieve the specified response.
Applied Load
This includes point forces, displacements, velocities, or
accelerations specified at an element or a connection. Use
the Applied Load type to simulate shaker tests or other
compact excitation sources. SEAM
uses the subsystem impedances to calculate input power for
applied loads.
Subsystem
Subsystem on which the load is applied.
Subsystem Type
Subsystem type forces on which the load is applied.
