Grid Contribution scenario (Simcenter Nastran and MSC Nastran )

Depending on the panel size, a panel contribution plot provides you with an approximation of the area that contributes the most, while the grid contribution contour plot gives you a more detailed view of contributions in a specific area.

Structural node contributions example

In this example plot, the values below the minimum specified range are rendered in dark gray. These represent nominal values below the dB reference.

To view structural node (grid) contributions, you must request Grid Contribution output through the Output Requests modeling object in a vibro-acoustic analysis.

Note:

This scenario supports the visualization of a series of results for different frequencies using the Animate, Previous Mode/Iteration, or Next Mode/Iteration commands.

Parameters

The following table lists the parameters available for defining Grid Contribution post-processing scenarios. They appear in the Parameters node of the Scenario Based Data-Visualization Navigator.

Parameter	Description
Show Total Response	Displays the total response, when all the modes or panels are considered.
Project Contributions on Total Response	Displays the projection of the selected mode or panel contribution functions on the total response.
Select Top Contributors	Lets you plot a selected number of highest contributors over the complete frequency range or over a defined frequency range from all available modes or panels. You can use this to find the modes or panels that are the highest contributors in a given frequency range.
Number of Contributors	Available when the Select Top Contributors check box is selected.Sets the number of the highest contributors that you want to display.
Frequency Range	Displays the contributions in the specified range.
From / To	Available when the Frequency check box is selected.Sets the low and high range in the selected units.
Partial Sum Contribution	Displays a single plot that contains the partial sum from the selected modes or panels.
Include Individual Contributions	Available when the Partial Sum Contribution check box is selected.Displays the plots for the individual modes or panels along with the plot containing the partial sum from these selected modes or panels.
Show Contributions as % of Response	Displays the plots for the selected modes or panels as percentage of the total response.

How do I

Define grid contribution parameters

Visualize structural node contribution, Element ERP, and directivity data

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

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Grid Contribution scenario (Simcenter Nastran and MSC Nastran ), Simcenter 3D 2021.1 Series

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