Performing Linear Dynamic Analysis
To perform modal time history 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. Beams are not supported. Select
Linear Dynamic, and under Options, click Modal
Time History
. Define the frequency
and dynamic properties of the study.
You can create a linear dynamic
study from an existing frequency study. Right-click the frequency study
icon and select Copy
to New Dynamic 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-damper connectors.
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 time-dependent force,
and pressure
loads, uniform and selected
base excitations, and initial
conditions.
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. First the program
calculates the natural frequencies (if not available), and then it proceeds
to the modal time history solution.
You can request to run the
study only for frequencies. Right-click the study icon and select Run frequency.
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 displacements, accelerations, velocities,
stresses, strains, and deformations for a specified solution step or extreme
values across all solution steps.
To define a time history plot at a specified
node, right-click the Results
folder and select Define
Response Graph.
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.
To perform harmonic 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 Harmonic
.
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.
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 frequency -dependent force,
and pressure
loads, 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 Result
folder and
select the desired option. You can plot displacements, accelerations,
velocities, stresses, strains, and deformations for a specified solution
step or extreme values across all solution steps.
To define a frequency response plot at a specified
node, right-click the Results
folder and select Define
Response Graph. You can plot 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.
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.