The Calculation and Measurement of Flexural and Longitudinal Structural Power Flow on a Tee-Shaped Beam.
1997
Szwerc, Richard P. | Hambric, Stephen A.
A method for the simultaneous measurement of both longitudinal and flexural wave intensities in beams is developed and measurements are then conducted on three specimens: a straight beam, a continuous T-beam, and a bolted T-beam. The work demonstrates that discontinuities in structures help to interchange large amounts of power between the two wave types. The straight beam serves to validate the measurement techniques. Successful comparisons are made to predicted power levels on a finite element model of the T-beam. The bolted T-beam shows the power flow is reduced across the bolted joint when compared to the continuous T-beam. The validated experimental results will form the basis for the validation of techniques (to be developed) to measure as well as calculate structural intensity in the presence of longitudinal and flexural waves.
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