Measurements and theoretical analysis complement each other. Experimental acceleration and strain data used to calculate coefficients of low-frequency vibrational modes of object under test. An iterative comparison of experimental and calculated strains give modal model of improved accuracy that predicts strains under operating conditions. Method useful in fatigue life and reliability analyses of buildings, pumps, engines, vehicles, and other systems subject to vibrations and loud noises during operation.
Deriving Strain Modes From Vibrational Tests
NASA Tech Briefs ; 8 , 4
1985-04-01
Miscellaneous
No indication
English
Force identification using a statically completed reduced model deriving from tests
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