Document Actions

Acoustic BEM Module


The Acoustic Boundary Element Module contains all the functionality you need to model the low frequency response of bounded and unbounded fluids within the VA One environment.

By making use of the RAYON Boundary Element solver, this module enables you to create accurate models of fluid loading, scattering, radiation and transmission of sound at low frequencies.

BEM scattering model  BEM radiation model (vehicle)

Benefits

  • Create detailed “component level” models of acoustic radiation and
    scattering at low frequencies (and/or for small, stiff components)
  • Quickly add BEM fluids to existing FE models to account for random
    acoustic loads, heavy fluid loading and acoustic radiation
  • Investigate acoustic diffraction, propagation, scattering and shadowing
    effects
  • Investigate the detailed near field response and directivity pattern
    associated with acoustic radiation from complex baffled and unbaffled
    components
  • Use information from a component level BEM model to update a system level SEA model (update radiation efficiencies, input powers etc.)

 

Features

  • Indirect and Direct Boundary Element methods
  • Inbuilt mesh coarsening and “shrink wrapping” algorithms
  • Automatic creation of fluid and data recovery meshes
  • Full support for non-compatible structural and fluid meshes
  • Full structural-acoustic coupling and random vibration analysis
  • Full library of acoustic loads: monopoles, plane waves, diffuse fields etc.
  • Infinite planes, rigid planes, pressure release planes, baffles
  • Fully coupled solution (BEM fluids fully integrated within VA One)