Modal analysis is a widely used technique for understanding structural behavior and for validating mechanical designs and simulating results. OROS offers OROS Modal 2; an easy and powerful solution to process a comprehensive modal analysis.
This solution is adapted to many cases thanks to these 3 modules dedicated to the main structural analysis techniques: Operating Deflection Shape, Experimental Modal Analysis, and Operational Modal Analysis.
 Operating Deflection Shape (ODS)
ODS is a great tool to visualize dynamically the vibration deflection shape of mechanical components during their normal operation. But it could also be the first step of a modal analysis.
Indeed, a simple acquisition is sufficient to visualize a structure’s behavior. It offers rapid visual feedback on the deformation of a structure in both time and frequency domain.
Experimental Modal Analysis (EMA)
EMA is the most common way to conduct a modal analysis. 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.
With all these methods, tools are proposed to efficiently determine and separate the different modes, especially those that are closely coupled. These functions added to the intuitive interface and powerful algorithms position OROS Modal 2 as an irreplaceable tool for modal analysis.
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