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Application Areas
- Environmental
Noise Control
- Architecture
and Engineering Design
- Vehicle
NVH Engineering
Benefits
- Simple
and cost effective noise prediction
- Noise
control and reduction
- Structural
acoustic scattering and radiation
- Vibro
acoustics
- Prediction
of interior and exterior noise fields
- Scattering
of sound by obstacles
- Prediction
of acoustic efficiency
Root Cause Analysis
- Sensitivity
analysis
- Panel
contribution analysis
Interfaces with finite element and experimental
data
- NASTRAN
FEM interface
- General
Interface for importing test-structural velocity
data
Other Capabilities
- Sound
propagation through sound absorbing materials
- Simulation
of problems with regions of different acoustic
properties (including real or complex frequency,
density, or sound speed
Diagnostic Analysis
BEASY Acoustic Design provides not only predictive
tools for a wide range of acoustic problems but
also introduces powerful diagnostic technology
to identify the root cause of acoustic problems.
Powerful panel contribution techniques can identify
the exact contribution of individual elements or
structural panels to the sound observed at a point.
The sensitivity of the sound to the structure
velocity and surface condition (impedance) also
provides key design information for the designer.
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Element Library
- Complete
range of elements including both discontinuous
and continuous elements
- Hierarchical
element types allow model refinement
without change of mesh
- Quadrilateral
and triangular surface elements
- All
elements have high order shape functions
for accurate model representation
Analysis Features
- Comprehensive
checking of data and of the required
computer resources ensures that no analysis
runs are wasted
- Local
error guides to give clear indication
of solution accuracy
- Multifrequency
Analysis
- Efficient
and economical solution at as many user-specified “internal
points” as required
- Step-by-step
analysis option allows re-analysis to
be carried out after minor changes without
recalculation of element matrices
Zoning or Substructuring
A model can be split into any number of zones or substructures
to represent different regions or acoustic properties and to
improve the run times and use of computer resources.
Boundary Conditions
and Loading
- Normal
pressure
- Fluid
velocity
- Structural
velocity
- Velocity
potential
- Admittance
- Impedance
- Point
noise source
- Line
noise source
- Acceleration
Geometry Features
- Implicit
symmetry about any axis
- General
zoning and substructuring
Acoustic Properties
- Real
or complex fluid density, wave number
and speed of sound
- Frequency
dependent
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