Abstract
A recursive solution method is derived for the transient response of one-dimensional structures subjected to the general form of time-dependent boundary conditions. Unlike previous solution methods that assumed the separation of variables, the present method involves formulating and solving the dynamic problems using the summation of two single-argument functions satisfying the motion equation. Based on boundary and initial conditions, a recursive procedure is derived to determine the single-argument functions. Such a procedure is applied to the general form of boundary conditions, and an analytical solution is derived by solving the recursive equation. The present solution method is implemented for base excitation problems, and the results are compared with those of the previous analytical solution and the Finite element (FE) analysis. The FE results converge to the present analytical solution, although considerable error is found in predicting a solution method on the basis of the separation of variables. The present analytical solution predicts the transient response for wave propagation problems in broadband excitation frequencies.
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Recommended by Associate Editor Eung-Soo Shin
Mohammad Tahaye Abadi is an Associate Professor of Mechanical Engineering. He received his Ph.D. from Amirkabir University of Technology (Tehran Polytechnic), Iran in 2003. His research interests include composite materials, material characterization, viscoelastic materials, shock and vibration, and structural health monitoring.
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Abadi, M.T. Recursive solution for dynamic response of one-dimensional structures with time-dependent boundary conditions. J Mech Sci Technol 29, 4105–4111 (2015). https://doi.org/10.1007/s12206-015-0904-5
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DOI: https://doi.org/10.1007/s12206-015-0904-5