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Reduce Noise and Improve Comfort for the Assembly

Unleashing the True Potential by Combining Vibration, Acoustics, and Structural Dynamics

Ansys MechanicalAnsys SoundActranLMS Virtual.Lab Acoustics

Overview

Vibro Acoustics

Vibro-acoustics, a combination of vibration and acoustics, is used to analyze and understand the interaction between vibrating structures and the surrounding environment. The term structural acoustics is also used in some regions. The use of vibro-acoustics is to examine the mechanical waves in structures and how they interact and radiate into surrounding media, such as air or water. Vibro-acoustic simulation analyses the coupling between structural vibrations and acoustic fields to predict radiated noise, interior sound pressure levels, and transmission loss — supporting design decisions to achieve noise targets efficiently without physical prototype builds.

Industries Served

AutomotiveIndustrial EquipmentTransportationMobilityAerospaceConsumer Goods

Deliverables

Sound Radiation MapsInterior SPL ResponseTransmission Loss CurvesAcoustic Treatment Assessment

Key Aspects

What Vibro Acoustics Involves

01

Exterior Sound Radiation

Computing the acoustic field radiated from vibrating structural surfaces using BEM or FEM/BEM coupling — predicting sound power levels and directivity patterns.

02

Interior Acoustic Response

Modelling enclosed acoustic cavities coupled to structural enclosures — predicting interior SPL, resonance modes, and the effect of acoustic treatment on sound quality.

03

Transmission Loss Analysis

Evaluating the sound insulation performance of panels, walls, and composites — predicting TL as a function of frequency and guiding layup and damping treatment selection.

04

Acoustic Material Characterisation

Modelling frequency-dependent acoustic absorption and damping materials (foam, felt, viscoelastic layers) using Biot and transfer matrix methods.

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