HyperGraph

Energy Distribution

Energy Distribution

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Energy Distribution

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In HyperGraph 2D, the Energy Distribution utility helps you to visualize the distribution of energy within a full vehicle NVH model, as a way to understand what components are dominating the vehicle response.

Energy Distribution in a Full Vehicle Model

1.The model is typically broken into a hierarchy of subsystems and components, allowing you to view and compare energy results in a similar, hierarchical way.
2.Different components may be represented using different types of models, allowing you to view and compare the energy of a finite element model and modal-based model.
3.Bushings and mounts often have higher levels of energy to show the energy associated with connections at a proper level.

To meet the needs described above, the following comparator groups are created to ensure that the energy comparison within the group makes practice sense.  Typically, energy results from finite element solvers are output for elements and CMS SEs, which can be difficult to relate to the subsystem and component to which they belong.  As a result, a set of module and connection ID mapping files are used to map the raw solver results to the appropriate module or components at the specific comparator levels.  The module and connection ID mapping files can be automatically generated as a part of the analysis job package, if the frequency response analysis job is setup using the Analysis Manager in the NVH Director.

Contributor Type

Comparator Group Level

System modes

Subsystem (L1)

Component (L2)

Contributor (L3)

Element (L4)

FE

N/A

Sum to Module next to root

FE Module - sum of all comps

FE comp 1

FE element 1

 

 

 

 

FE comp 2

FE element 2

 

 

 

 

FE comp 3

FE element 3

CMS SE

N/A

Sum to Module next to root

CMS SE Module - sum of all modes

CMS SE mode 1

N/A

 

 

 

 

CMS SE mode 2

N/A

 

 

 

 

CMS SE mode 3

N/A

Connections

N/A

Sum of all connection

Connections owned by modules

Connector element 1

N/A

 

 

 

 

Connector element 2

N/A

 

 

 

 

Connector element 3

N/A

System modes

System mode 1

N/A

N/A

N/A

N/A

 

System mode 2

 

 

 

 

 

System mode 3

 

 

 

 
hmtoggle_plus1To display the Energy Distribution Analysis Utility:
1.From the File menu, select Preferences > NVH-Utilities.
2.From the NVH menu, select Energy Distribution.

nvh_menu

An NVH-Utilities tab is added to the browser.  This browser tab contains the following sub-tabs: Load, Display and Study.

hg_nvh_energy_dist_load_tab

NVH-Utilities Browser – Load tab (Energy Distribution Analysis)

3.To close the NVH-Utilities tab, click on the X in the upper right corner of the dialog.

See Also:

Energy Distribution Analysis - Load Tab

Energy Distribution Analysis - Display Tab

Energy Distribution Analysis - Study Tab

Display Options Dialog

Filter Contributors Dialog