In the first part of this paper, the transmission of bending and torsional waves on beams forming + or T-shaped systems is investigated. Then, the propagation of two different wave types, such as bending and longitudinal or torsional waves, on beams with periodic discontinuities is studied theoretically. Finally, the results are applied to the vibrations of grillages.
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Manfred Heckl (1964) studied this question.
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