Within the scope of a piecewise homogeneous body model, with the use of the three-dimensional linearized theory of elastic waves in prestrained bodies, the effect of initial strains in layers on the dispersion of torsional waves in a hollow sandwich cylinder is studied. Two cases are considered: in Case 1, it is assumed that initial strains exist in only face layers; in Case 2, initial strains occur in all layers of the cylinder. The elasticity relations for layer materials of the cylinder are given through a harmonic potential. A dispersion equation is derived, and an analytical expression is obtained for the limit values of wave propagation speed for low wave numbers. Numerical results are presented and discussed.
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Russian translation published in Mekhanika Kompozitnykh Materialov, Vol. 49, No. 3, pp. 433–444, May-June, 2013.
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Akbarov, S.D., Kepceler, T. & Egilmez, M.M. On the influence of initial strains in layers on the propagation of torsional waves in a hollow sandwich cylinder (soft core and stiff face layers). Mech Compos Mater 49, 297–304 (2013). https://doi.org/10.1007/s11029-013-9346-2
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DOI: https://doi.org/10.1007/s11029-013-9346-2