Modal Acquisition and Analysis

The Modal package is part of m+p international's SO Analyzer for noise & vibration measurements and analysis that provides a complete set of tools for observing, analysing and documenting the vibrational behavior of machines and mechanical structures. It includes modules for multiple input/multiple output (MIMO) acquisition as well as for ODS, SDOF and MDOF analysis. A modal model validation module is also available.

The Modal software makes it very simple to create the structure´s geometry and calculate modal parameters including mode shape animation. The experimental modal data (frequency, damping and mode shape) are obtained by curve fitting a set of FRF (Frequency Response Function) measurements. FRFs can be directly measured or calculated from time records automatically. FRFs and time records can also be imported from other systems. Structural Dynamics Modifications and FE model correlation and updating are further optional tools.

Key Features

• Ease of use, getting high-quality results quickly
• Data collection, analysis and reporting in one package
• MIMO (multi-shaker) data acquisition
• Analysis of measured or imported data; many popular formats are supported
• ODS (Operating Deflection Shape),
  SDOF (Single Degree of Freedom) and
  MDOF (Multiple Degree of Freedom) analysis
• Stepped sine measurements
• Modal Model Validation (MAC Graph and Table)
• Interface to FEMtools for SDM analysis (optional)
• Correlation/updating between experimental and Finite Element Analysis data (optional)
• MS Windows like user interface
• Intelligent wizards for easy and safe user guidance
• Copy&paste to ActiveX applications like MS Word and PowerPoint
• Free installation of the SO Viewer to actively view/analyze data like an animation display
  on any MS Windows/Office PC
• Automated, comprehensive test reporting using the e-Reporter module
• Data import/export to standard applications like Excel and MATLAB
• Automation of repetitive tasks

Applications

• Experimental modal analysis in the automotive, aerospace, defense, consumer and other industries
• Fixture analysis for environmental vibration test (for MILSTD 810F)
• Vibrational troubleshooting
• Structural Dynamics Modifications
• FE Model Validation and Updating