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overview seam software SEAM Technical Features

The SEAM software package provides a complete implementation of statistical energy analysis using vibrational and acoustic energy flow techniques. The following list describes many of the standard features that come with SEAM. Other features are available on request. Please feel free to contact Cambridge Collaborative for more information on any of these features.

- Ability to develop very large models with thousands of SEA subsystems
- Bending and inplane subsystems for all structural elements
- Calculation of coupling loss factors and modal densities
- Transverse shear deformation corrections for bending of all structural elements
- Frequency dependent damping and material properties
- Octave, one-third-octave, narrowband and percentage bandwidth analysis
- Fast sparse matrix solution routines
- Prediction of input power and response mean and variance
- Acoustic duct, layer, and space elements with one, two and three-dimensional modal densities
- Design sensitivity analysis
- Transient analysis
- Interface to structural optimization programs
- Automatic calculation of properties for beam, plate and shell elements from cross-section dimensions and materials
- Readable ASCII input and output files
- Choice of several different metric and English units, including mixed units
- Automatic generation of SEA subsystems from structural and acoustic elements
- Automatic generation of SEA junctions for each degree of freedom from structural and acoustic point, line and area connections
- Parameter studies using symbolic constants and algebraic equations for input parameters
- On-line context sensitive help
- Quick-look plotting for subsystem SEA parameters: modal energy, energy flow, response, transfer functions, acoustic noise reduction, vibration reduction, and sound transmission loss
- Acoustic damping using loss factors, absorption coefficients, or reverberation times
- Algebraic expressions for input parameters

SEAM is the only commercially-available software that provides a complete statistical representation of the SEA response. Predictions of the mean-response can be combined with SEAM predictions of the variance to set upper confidence intervals. Use of the upper confidence interval for product design insures that new products will meet acoustic and vibration design objectives.