Abstract
The problem of wave transmission between two finite beams joined by a cross beam welded between them is solved taking full account of longitudinal and flexural waves in all the beams. Prediction of longitudinal and flexural wave transmission through the “T” joints in the beam system was performed over a wide band frequency range. The wavenumber-frequency spectrum was used to separate the wave types based on their different dispersive characteristics. Flexural direction forces at one end of the beam system were examined. The experimental data were taken using an accelerometer array and a simultaneous twenty-three channel measuring system. A transfer function correction technique was employed to account for the instrumentation errors. Experimental results were confirmed by the finite element analysis results. The total mean squared vibrational energy levels were calculated in each section of the beam system to quantify the transmission characteristics of both flexural and longitudinal waves passing through the beam joints.
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Oh, S. Wave transmission at discontinuities using wavenumber-frequency techniques. KSME Journal 7, 272–281 (1993). https://doi.org/10.1007/BF02970971
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DOI: https://doi.org/10.1007/BF02970971