1981-10-01

A Simultaneous Frequency Domain Technique for Estimation of Modal Parameters from Measured Data 811046

A new method for estimation of vibration mode parameters from measured frequency response functions is introduced. Response functions associated with selected “independent” degrees of freedom are employed simultaneously to deduce an effective dynamic matrix with a linear least-square technique. Vibration mode parameters are then deduced from the dynamic matrix. An additional least square relationship among “independent” and “dependent” degrees of freedom provides the means for estimation of mode shapes associated with all measurement locations.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: Purchase more aerospace standards and aerospace material specifications and save! AeroPaks off a customized subscription plan that lets you pay for just the documents that you need, when you need them.
X