HyperView User's Guide

Introduction to Acoustic Grid Participation

Introduction to Acoustic Grid Participation

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Introduction to Acoustic Grid Participation

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Acoustic grid participation is an important diagnostic tool for understanding what area of the structure contributes significantly to the interior acoustic response.  This understanding will then allow you to determine what potential design changes can help reduce the acoustic response.

Acoustic grid participation is a way to break down an acoustic response to contributions from grids on the fluid-structure interface (see below):

acoustic_grid_diagram

Structure grid participation

Provides participations from the body structure side of the fluid-structure interface.

Fluid grid participation

Provides participations from the interior cavity side of the interface.

Physical

The body structure grids vibrate, exciting the interior cavity fluid grids, which eventually generates an acoustic response (which is typically a driver’s or passenger’s response).

NoteBoth Structure and Fluid grid participations are acoustic grid participations.  The word ‘acoustic’ in ‘acoustic grid participation’ relates to the fact that the response is acoustic (or pertains to sound).