Abstract
This paper analytically investigates the nonlinear responses of a cable-beam coupled system under the combined effects of internal and external resonance. The cable is considered a geometric nonlinearity, and the beam is considered as Euler–Bernoulli model, but it is coupled by fixing it at one end. The coupled nonlinear differential equations are formulated by using the Hamilton principle. The spatial problem is solved by using Galerkin’s method to simplify the governing equations to a set of ordinary differential equations. Applying the multiple time scales method to the ordinary differential equations, the first approximate solutions and solvability condition are derived. The effects of the cable sag to span ratio, mass ratio, and stiffness ratio on the nonlinear responses are investigated. The results show good agreement between the analytical and numerical solutions especially near the external resonance frequency.
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Wei, M.H., Xiao, Y.Q., Liu, H.T. et al. Nonlinear responses of a cable-beam coupled system under parametric and external excitations. Arch Appl Mech 84, 173–185 (2014). https://doi.org/10.1007/s00419-013-0792-z
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DOI: https://doi.org/10.1007/s00419-013-0792-z