Actran VibroAcoustics0 pages

DATASHEET

MSC Software: Product Datasheet - ActranTM VibroAcoustics

Actran VibroAcoustics
™

Ideal Tool for Vibro-Acoustic Simulation

Key Features

Product Overview
A complete, robust, reliable, productive and high performance vibro-acoustic CAE
module
Actran VibroAcoustics provides a rich library of structure materials, elements, loads, boundary
conditions, solution schemes, solvers and interfaces with leading FEA solvers.
To simulate faithfully complex vibro-acoustic phenomena, engineers can either rely on Actran’s
own structure and acoustic modeling capabilities, or import existing structure models and
results from other FEA solvers and combine them with Actran acoustic modeling.
For building vibro-acoustic models exclusively in Actran’s environment, engineers can access
to Actran’s structure materials and elements such as visco-elastic solid, shells, beams, rigid
bodies, springs, mass, porous media, composite materials, active components (piezo-electric
material), etc. The modeling is usually in physical coordinates (without dynamic model reduction)
in order to account for accurately the complex structural and acoustical damping mechanism.
When interfacing Actran with structural FEA solvers, structure eigen modes can be imported
into Actran and combined with its acoustic modeling in order to perform vibro-acoustic analysis.
A Nastran superelement of structure can also be imported into Actran.
A Nastran structure analysis can be translated into an Actran analysis (using an integrated
Nastran to Actran translator) and enriched to a vibro-acoustic analysis in the Actran
environment.
Actran vibro-acoustic models can be loaded by excitations representing the most realistic
working conditions: combination of acoustic, dynamic and kinematic loads, as well as random
excitations (e.g. diffuse sound field, turbulent boundary layer load).
Actran VibroAcoustics and AeroAcoustics can be combined in a single finite element model to
simulate complex aero-vibro-acoustics problems (see Actran AeroAcoustics product sheet).

Target Applications
•tAutomotive: powertrains, intakes, exhausts, passenger compartment, trim, seats, hoses, tires,
windows and windshields, audio, HVAC, active noise control
•tAerospace: sound transmission through cockpit and fuselage, noise propagation
in air distribution
•tSystem, response to TBL excitation, acoustic fatigue of embarked component at
rocket launch
•tConsumer goods: telephones, headsets, loudspeakers, hearing aid devices, disk
•tDisk drives, washing machines, refrigerators, cameras, etc.
•tShipbuilding: underwater acoustic propagation, sonar, vibro-acoustics of water and hull

•tAll Actran Acoustics features (see dedicated
flyer)
•t Full element library for modeling structures:
solids, shells, beams, springs, rigid bodies, etc.
•t Poro-elastic element library based on the Biot
theory for modeling bulk reacting materials
•t Piezo-electric element libraries for modeling
active structures
•t Visco-thermal elements for modeling dissipation in thin air layers or thin tubes
•t Composite elements library for modeling
complex multilayered composite structure
•tAdvanced random vibro-acoustic features
including diffuse sound field, turbulent boundary layer and rain-on-the-roof excitation models
•t Solution in physical or modal coordinates, or
using hybrid methods
•t Full support of non-congruent meshes
•t Direct, iterative and parallel solvers for reduced
CPU times
•t Unique fast FRF Krylov solver
•t Computation of stress levels
•t Output of global and per material energy
quantities
•t Compatible with other Actran modules for
aero-vibro-acoustic simulations
•t Nastran model to Actran model translator
•t Integration in Actran VI