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• W2900145989 abstract "Exact steady-state solutions are obtained for the motion of an single-degree-of-freedom (SDOF) system that is provided with a highly nonlinear auxiliary mass damper (AMD), which resembles a conventional dynamic vibration neutralizer (DVN), whose relative motion with respect to the primary system is constrained to remain within a specified gap, thus operating as a “pounding DVN.” This configuration of a conventional DVN with motion-limiting stops could be quite useful when a primary structure with a linear DVN is subjected to transient loads (e.g., earthquakes) that may cause excessive relative motion between the auxiliary and primary systems. Under the assumption that the motion of the nonlinear system under harmonic excitation is undergoing steady-state motion with two impacts per period of the excitation, an exact, closed-form solution is obtained for the system motion. This solution is subsequently used to develop an approximate analytical solution for the stationary response of the pounding DVN when subjected to random excitation with white spectral density and Gaussian probability distribution. Comparison between the analytically estimated rms response of the primary system and its corresponding response obtained via numerical simulation shows that the analytical estimates are quite accurate when the coupling (tuning parameters) between the primary system and the damper are weak, but only moderately accurate when the linear components of the tuning parameters are optimized. It is also shown that under nonstationary, the pounding DVN provides slightly degraded performance compared to the linear one but simultaneously limits the damper-free motion to specified design constraints." @default.
• W2900145989 created "2018-11-16" @default.
• W2900145989 creator A5037653400 @default.
• W2900145989 creator A5071653821 @default.
• W2900145989 date "2018-11-22" @default.
• W2900145989 modified "2023-09-26" @default.
• W2900145989 title "Response of Pounding Dynamic Vibration Neutralizer Under Harmonic and Random Excitation" @default.
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• W2900145989 doi "https://doi.org/10.1115/1.4041910" @default.
• W2900145989 hasPublicationYear "2018" @default.
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