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Dynamic contact of two GAO beams

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Author


Ahn, Jeongho
Kuttler, Kenneth
Shillor, Meir

Date


2012-11

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2012 shillor electronic journal of differential equations dynamic contact of two gao beams.pdf

Abstract


The dynamic contact of two nonlinear Gao beams that are connected with a joint is modeled, analyzed, and numerically simulated. Contact is modeled with either (i) the normal compliance condition, or (ii) the unilateral Signorini condition. The model is in the form of a variational equality in case (i) and a variational inequality in case (ii). The existence of the unique variational solution is established for the problem with normal compliance and the existence of a weak solution is proved in case (ii). The solution in the second case is obtained as a limit of the solutions of the first case when the normal compliance stiffness tends to infinity. A numerical algorithm for the problem is constructed using finite elements and a mixed time discretization. Simulation results, based on the implementation of the algorithm, of the two cases when the horizontal traction vanishes or when it is sufficiently large to cause buckling, are presented. The spectrum of the vibrations, using the FFT, shows a rather noisy system.

Citation


Ahn J., Kuttler K.L., and Shillor M. (2012). Dynamic contact of two GAO beams. Electronic Journal of Differential Equations, 2012(194), 1-42.

URI


http://hdl.handle.net/10323/4222

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  • Mathematics and Statistics Faculty Scholarship

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