To perform random vibration analysis:
- Create a linear dynamic study. Right-click the top icon in the Simulation study tree and select Study. You can define a solid, shell, or mixed mesh study. Select Linear Dynamic, and under Options, click Random Vibration
. Define the frequency and dynamic properties of the study.
- Define material for each solid and shell. To define a material for a solid or shell right-click its icon in the Simulation study tree and select Apply/Edit Material.
- Define restraints. Right-click the Fixtures
icon in the Simulation study tree and select from the options. You can also apply spring connectors to link components.
- Define damping. Right-click the Damping
folder in the Simulation study tree and select Edit/Define. You can define modal, composite modal or Rayleigh damping.
- Define loads. You can define psd curves of force, pressure, uniform and selected base excitations.
- Define Result Options. Right-click the Result Options
folder in the Simulation study tree and select Edit/Define.
- Mesh the model and run the study.
- View the results:
- Double-click an icon in the Results
folder to display the associated plot.
- To define a new plot, right-click the Results folder and select the desired option. You can plot psd of displacements, accelerations, velocities, stresses, strains, and deformations for a specified solution step or extreme values across all solution steps.
- To define a psd response plot at a specified node, right-click the Results folder and select Define Response Graph. You can plot psd of stresses, displacements, velocities, and accelerations.
- To list results, right-click the Results folder and select the desired option. You can list , natural frequencies, mass participation factors, stresses, displacements, accelerations, velocities, strains, and reaction forces.
Click here for more result viewing options.