OMA Software

Operational Modal Analysis (OMA) requires specialized software to identify modal parameters such as natural frequencies, damping ratios, and mode shapes from vibration measurements collected under ambient or operational excitation. OMA software is widely used in structural dynamics and structural health monitoring.

Unlike Experimental Modal Analysis, OMA software works with response-only data, using advanced system identification algorithms to extract the dynamic properties of structures.

Key capabilities of OMA software

OMA software typically includes the following core functionalities:

Signal processing
filtering, spectral estimation, and correlation analysis
System identification algorithms
such as Stochastic Subspace Identification (SSI) and Frequency Domain Decomposition (FDD)
Modal parameter estimation
extraction of frequencies, damping ratios, and mode shapes
Validation tools
including stabilization diagrams and Modal Assurance Criterion (MAC)
Visualization tools
for mode shapes and structural behavior

Why specialized OMA software is needed

Operational Modal Analysis involves estimating modal parameters without measuring input forces. This requires robust mathematical methods and reliable data processing.

Specialized OMA software ensures:

accurate identification of physical modes
efficient handling of large datasets
consistent and repeatable results

Example of OMA software

Operational Modal Analysis is performed using dedicated software tools designed for modal parameter estimation from response-only data.

These capabilities are implemented in software such as ARTeMIS Modal Pro, which provides tools for OMA workflows including system identification, validation, and visualization. Learn more about ARTeMIS Modal Pro

Key capabilities of OMA software

Why specialized OMA software is needed

Example of OMA software

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