Abstract
As a basic model of dynamic analyses of the elastic structural elements having some geometrical inhomogeneities, distortion of dispersive waves by a notch on a rod is studied both experimentally and analytically. An aluminium alloy circular rod is notched at its intermediate portion and is subjected to external loads by impinging cylindrical bullets at one end of the rod. Unsteady strain waves are detected by several strain gauges and their waveform analyses are made. Also, the incident, reflected, and transmitted waves and their interferences are simulated using the approximate wave equation that has been already proposed by the present authors.
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