HyperGraph

Global Modes - Load Tab

Global Modes - Load Tab

 Previous topic Next topic No expanding text in this topic  

Global Modes - Load Tab

 Previous topic Next topic JavaScript is required for expanding text JavaScript is required for the print function  

From the Global Modes utility, select the Load sub-tab and choose an OptiStruct or Nastran modal result file to load.  Once the file is read, subcase and modal frequencies from the result file are loaded. The Global Modes utility attempts to automatically identify the global modes based on the criteria and advanced options.

nvh_global_modes_load_tab

NVH-Utilities Browser - Load tab (Global Modes)

Option

Description

File selection

From the Modal Results field, select a result file containing normal modes results and click Load, then click Apply.  Once the match is complete, the Order Response tab is displayed and the Result selection fields are populated.

Result selection

The following fields are populated after a file is loaded.

 

Subcase

The drop-down menu contains the subcases from the normal mode result file.

 

Criterion (1-100%)

Enter a criteria value within the range 1-100. Identify the % of structural grids participating in the mode shape. 100% means that all the grids are participating and the mode is considered a global mode.  The recommended default value is 85-95%.

Advanced selections

Displacement coefficient

The coefficient value used to identify the global modes by dividing the average of the maximum displacement value for the top percentage nodes.

 

Nodes participation %

The percent of nodes with a maximum displacement value.

Identify Modes

 

Modes Filter