Enhanced exploitation of vibration test data by PolyMAX modal parameter estimation method

Details Enhanced exploitation of vibration test data by PolyMAX modal parameter estimation method Enhanced exploitation of vibration test data by PolyMAX modal parameter estimation method

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.558...95p&link_type=abstract

Proceedings of the 5th International Symposium on Environmental Testing for Space Programmes Noordwijk, The Netherlands (ESA SP-

Computer Science

Performance

Scientific paper

The paper investigates the performance of the new modal parameter estimation method "PolyMAX" when it is applied to large aerospace structures. PolyMAX is a least-squares frequency-domain method and uses multiple-input-multiple-output frequency response functions as primary data. The method can be implemented in a very similar way as the industry standard polyreference (time-domain) LSCE method: in a first step a stabilisation diagram is constructed containing frequency, damping and participation information. Next, the mode shapes are found in a second least-squares step, based on the user selection of stable poles. One of the specific advantages of the technique lies in the very stable identification of the system poles and participation factors as a function of the specified system order, leading to easy-to-interpret stabilisation diagrams. This implies a potential for automating the method and to apply it to "difficult" estimation cases such as high-order and/or highly damped systems with large modal overlap. This paper briefly reviews the theory and discusses several aerospace case studies.

Affiliated with

Also associated with

No associations

Rating

Enhanced exploitation of vibration test data by PolyMAX modal parameter estimation method does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Enhanced exploitation of vibration test data by PolyMAX modal parameter estimation method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhanced exploitation of vibration test data by PolyMAX modal parameter estimation method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1172205