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Boundary Element Acoustics

 
LMS Virtual.Lab Boundary Element Acoustics is an entry-level, easy-to-use acoustic simulation tool to predict and improve the sound and noise performance of a broad range of systems. With straightforward models and embedded solver technology, engineers can acquire results faster without compromising accuracy. This solution tackles both internal and external radiation problems and covers a broad range of applications.
 

LMS Virtual.Lab Boundary Element Acoustics

VL Acoustics Boundary Element Acoustics 01
LMS Virtual.Lab Boundary Element Acoustics is an entry-level, easy-to-use acoustic simulation tool to predict and improve the sound and noise performance of a broad range of systems. With straightforward models and embedded solver technology, engineers can acquire results faster without compromising accuracy.

LMS Virtual.Lab Boundary Element Acoustics uses the boundary element method (BEM), which effectively reduces complex 3D geometry to 2D surface dimensions. Only the surface areas of the structural systems that are vibrating or scattering sound need to be modeled. BEM model sizes are typically limited to a few thousand elements, resulting in relatively small, easy-to-create, check and handle models compared to complex 3D finite element models. These reduced models deliver results in a shorter timeframe, helping users to quickly evaluate the acoustic design performance.

LMS Virtual.Lab Boundary Element Acoustics can accurately model structuralacoustical coupling phenomena, common in lightweight structures when acoustic sources make the structure vibrate. For example, strong variations in engine pressure will make the engine intake vibrate, generating additional radiated noise.

This solution tackles both internal and external radiation problems and covers a broad range of applications, such as transmission loss through panels, electronic or household equipment sound quality and radiated noise. The solution runs transparently with other CAE codes and includes seamless links to Abaqus, Ansys, CATIA CAE,
I-DEAS, Nastran, and Permas. It is an ideal starting point for advanced and specialized applications.



Features

  • Indirect and direct boundary element methods
  • Full vibro-acoustic coupling
  • Plotting and 3D imaging: SPL, ISO 3744 Sound Power, RMS, dB weighting, (1/3) octave, TL
  • Surface absorbing panels
  • Boundary conditions: surface vibrations and pressures, acoustic sources


Benefits

  • Find the cause of noise problems quickly with minimal modeling effort
  • Predict acoustic performance accurately and minimize design risk
  • Mesh coarsening and high-speed BEM options accelerate the process even more



    Covering a range of industries, LMS application cases let you discover how LMS solutions help our customers solve their real-life engineering challenges. 


    Acoustic simulation technology Miele washing machines Process for Noise Prediction 1Cleaning out noise early in design at Miele

    Instead of damping some of the noise with hit-or-miss changes and numerous prototype tests late in development, engineers now have a proven process for designing quietness into their products up front in the cycle. This predictive capability radically compresses development time and is a key part of the company’s strategy to deeply penetrate new markets with a broad range of machines soon to hit showroom floors around the world.



    gas turbine acoustic simulation 1Siemens Optimizes Gas Turbine Performance using LMS Acoustic Simulation Software 

    Siemens Power Generation selected LMS SYSNOISE as the key application for acoustic modeling and simulation, because of its widespread use and extensive acoustic simulation capabilities. In the combustion optimization process followed at Siemens, engineers take the output of Computational Fluid Dynamics (CFD) simulations, including steady-state flow velocity, temperature, and fluid properties, as input for acoustic simulations in LMS SYSNOISE. 


    Sound quality NVH Testing CAE 2Arctic Cat makes fast moves in the power sports market

    Arctic Cat is one of the early pioneers in the power sports industry and has firmly established itself as a leading manufacturer of these vehicles. an essential part of Arctic Cat’s ability to develop a wide range of innovative new vehicle models so quickly is the company’s investment in an NVH center that uses LMS technology. 



    More cases:





    Brochures
    Download the LMS Virtual.Lab Introduction Brochure
    Download the LMS Virtual.Lab Acoustics Brochure

    Demo Movie
    Boundary Element Acoustics

    Images

    VL Acoustics Boundary Element Acoustics 02.jpg VL Acoustics Boundary Element Acoustics 03.jpg VL Acoustics Boundary Element Acoustics 04.jpg
    Minimize the noise radiation from oilpans. Sound directivity patterns from loudspeakers. Windmills radiating noise into the environment.




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