The effect of discrete ribs and Winkler and Pasternak foundations on the number and shape of the dispersion curves of harmonic waves propagating along a stringer-reinforced cylindrical shell is studied. The following cases of deformation are considered: (i) the stringers bend and twist, (ii) the stringers only bend, and (iii) the stringers only twist. The study of the effect of elastic foundation on the wave numbers shows that as the coefficients of subgrade reaction increase, the cutoff frequencies increase within a given range of excitation frequencies and the shape of the dispersion curves changes
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Translated from Prikladnaya Mekhanika, Vol. 51, No. 5, pp. 116–124, September–October 2015.
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Lugovoi, P.Z., Prokopenko, N.Y. Influence of an Elastic Foundation on the Dispersion of Harmonic Waves in Longitudinally Reinforced Cylindrical Shells. Int Appl Mech 51, 583–590 (2015). https://doi.org/10.1007/s10778-015-0714-6
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DOI: https://doi.org/10.1007/s10778-015-0714-6