Adams Advanced Package > Adams Vibration > Dialog Box - F1 Help > Perform Vibration Analysis

Perform Vibration Analysis

Vibration -> Test -> Vibration Analysis
Creates and runs a vibration analysis (see Vibration Analysis Calculation Methods to learn more).
 
For the option:
Do the following:
Analysis Selection
Specify whether you are creating a new analysis or running an existing one.
Analysis Name
Enter the name of your new or existing analysis.
Operating Point
Specify one of the following:
■Static - Performs an equilibrium analysis (after assembling the system).
■Assembly - Assembles the system into its input configuration.
■Script - Executes a user-specified script. If the integrated solver is selected in the simulation settings, this script may only contain view commands. For the external solver, the script can only contain solver commands. If selected, specify the name of your simulation script in the Simulation Script Name text box.
Import Settings From Existing Vibration Analysis
Select to display the Database Navigator, where you can choose an existing vibration analysis whose settings you want to use in your current analysis. Adams Vibration updates the Perform Vibration Analysis dialog box with the appropriate input and output channels.
Analysis Type
Select the type of analysis you want to perform.
■Forced Vibration Analysis. See Creating and Running a Forced Vibration Analysis.
■Normal Mode Analysis. See Creating and Running a Normal Modes Analysis.
Damping
Check to include damping effects in the analysis. If not checked, damping effects are not included in the analysis.
Linear States Options (Valid Only with Adams Solver (C++))
Select to specify linear state options. This is only available if you are running Adams Solver (C++).
If you select Linear States Options, Adams Vibration displays the following two options:
Plant State
Select the plant state you want to use in the linearization of the model. Learn more about the PSTATE statement.
Reference Marker
Specify the marker you want to use in generating plant states for linearization.
Frequency Range/User-Specified Frequencies
Select the type of frequency you want to use.
■Frequency Range - Specify the begin and end values and the number of steps in the frequency range. Also, select Logarithmic Space of Steps if you want the frequency steps spaced logarithmically (if not selected, the steps are spaced linearly).
■User-Specified Frequencies - Enter the frequency values for the analysis. You can also select Create Design Variables from Values in File to open the Create Design Variable from File dialog box, where you can enter the filename that contains the design variable you want to use.
Modal Energy Computation
Select to open the Modal Info Computation dialog box.
Create Multi-Run Script
Select to specify multi-run script specifications. Displays the Create Vibration Multi-Run Script dialog box.
If you set Analysis Type to Forced Vibration Analysis, Adams Vibration displays the following options:
Input Channels
Enter the name of the input channels you want to use in this vibration analysis.
Note: You cannot select input channels with actuators of PSD type and input channels with actuators of non-PSD type in the same analysis.
Output Channels
Enter the name of the output channels you want to use in this vibration analysis.
If you are modifying an existing forced vibration analysis with results, Adams Vibration displays the following option:
Reuse Existing State Matrix
If you select this option, you can specify the modes for the Forced Vibration Analysis.
■All Modes - Include all modes in the forced vibration analysis.
■Selected Modes - Specify the modes to include. Learn how to Include or exclude modes.
Note: Changes made in text boxes that are grayed out are not included in the subsequent analysis.