Multiple Sample Analysis, Structures MSA - Display

Figure 1. NVH-Utilities Browser - Display tab > Run Info (Structures MSA)

Figure 2. NVH-Utilities Browser - Display tab > Parameter Effects (Structures MSA)

In the Display tab, the Run Info sub-tab allows you to plot responses for runs with highest and lowest responses for a particular frequency or a range of frequency. It is also possible to review randomized value used for the variables in a particular run. The Parameter Effects sub-tab allows you to plot sensitive parameters contributing to response scatter at a particular frequency. To activate this tab, you must first load a file from the Load tab.

Run Info

Allows you to visualize responses for highest and lowest responses. Also allows review of parameter values used in specific run.

Frequency Selection: Select an option to choose specific frequency or frequency range.
Specific frequency: Enter a specific frequency or use the slide bar to select a frequency value.
Frequency Range: Frequency range indicates the available range, based on your result PCH file.; Using the From and To fields, you can customize your own frequency band.
Show highest runs: Select the number for which the you want to see the runs with highest responses.
Show lowest runs: Select the number for which the you want to see the runs with lowest responses.
Display Options: The Display Options dialog allows you to customize the plot, including scale, weighting, and the plot layout.
Display: Click Display to display the response plots, for chosen number of highest/lowest runs.
Run Directory: Select the directory with Multiple Sample Analysis runs.
Run Number: Click the response curve and the corresponding run number is listed. It is also possible to enter the run number manually.
Modal Parameters: This subtab shows the list of modules and randomized modal parameter values, frequency and damping, used in the selected run.
Connection Parameters: This subtab shows the list of connections and randomized connection parameter values, stiffness and damping, used in the selected run.
Rerun: This will allow you to generate a solver deck with randomized values of parameters in the selected run for further diagnostic. This will open a hypermesh session, load the assembly and set-the randomized values to parameters used on the specific run. Then you can export the solver deck with advanced diagnostic options for further debugging and root-cause analysis.

Parameter Effects

This allows you to plot sensitive parameters contributing to response scatter for a selected frequency.

Enter a specific frequency in the Specific Frequency field, or use the slider bar to select a frequency value. When you use the slider bar to select a frequency, a red line is displayed on the response plot and is dragged simultaneously as you drag the slider bar.

Show Contrib

Select the number of sensitive contributors to be reviewed.

Parameter

Select the type of parameter for review of their contributions.

Modal frequency
Modal damping
Connection stiffness
Connection damping

Rank by

Select the method of filtering the sensitive parameters.

Export parameters

Export the sensitive parameters in an external *.csv file. This can be used on pre-side to select the parameters from the csv file for randomization.