Oros SASU

Oros SASU

- Version ODS - Operating Deflection Shapes Modal Analysis Software

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Now an affordable modal software providing a comprehensive package for modal test, for modal experts as well as novice engineers. The OROS Modal software is designed for modal analysis, structural dynamics and operating deflection shapes (ODS vibration).

Overview

Modal analysis is a powerful technique for understanding structures behavior to validate simulation results, mechanical designs and maintenance. Discover Modal, an application oriented software associating the latest algorithms with a user friendly interface and automatic procedures. Modal is highly integrated with the OROS Analyzers range, rough, rugged and portable, designed for the field. All the OROS expertise and innovation is directed to bring the best in noise and vibration analysis.

Dedicated acquisition interface

Define the test setup in few clicks whatever the excitation: sequence, transducer definition, measurement and trigger parameters, interactive display, control panel.

Geometry Building

Interactive interface to create, modify, assemble standard elements or complex structure with global and local coordinate systems. Import from external software in universal file format.

Direct acquisition and Signal processing

Dedicated interface for modal with impact hammer acquisition, shakers or under operational conditions to obtain:

  • FRF H1, FRF H2 for EMA
  • Power Spectral Density, Half Power Spectral Density for OMA
Broadband method for EMA & OMA

With a clear stability diagram identify all the modes in the full frequency band at one time with high accuracy.

Experimental Modal Analysis (EMA)

Using an impact hammer or shaker(s), several identification methods allow one to determine modal parameters: frequency, damping and mode shape. Users can perform Single Input/Multiple Output (SIMO) method for a first approach and Multiple Input/Multiple Output (MIMO) techniques to make a more thorough analysis.

Operational Modal Analysis (OMA)

OMA is a very interesting technique for large structures or test items that are not easily excitable (e.g., civil infrastructures). With this method, modal parameters can be estimated without a known, controllable excitation signal.

  1. Geometry Building
  2. Direct acquisition & Signal processing
  3. Operating Deflection Shape (ODS)
  4. Experimental Modal Analysis (EMA)
  5. Operational Modal Analysis (OMA)
  6. Validation

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