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- W2061528779 abstract "The viscous damping force in the mixed form as fd (˙x )= c1 ˙ x + c2 |˙ x| ˙ x can well describe damping characteristics of isolators and dampers in many cases. In this paper, performance characteristics of single-degree-of-freedom (SDOF) linear- stiffness isolators with mixed and piecewise mixed viscous damping are analytically examined under harmonic base excitation. Based on the first-order harmonic balance method (HBM), both relative and absolute displacement transmissibility expressions with the equivalent linear damping coefficient (ELDC) are given. And the analytical calculations show good agreement with the numerical results. Also, the influence of nonlinear damping on the response characteristics is investigated by comparing the transmissibility of linear and nonlinear systems. The resonant frequency always shifts to a lower value as the nonlinear damping component of the force fd (˙x )= c1 ˙ x + c2 |˙ x| ˙ x becomes stronger, and when the damping ratio in the corresponding linear model is relatively high, the relative transmissibility decreases at frequencies higher than the resonance frequency of the corresponding linear damping system and the absolute one increases for the frequency ratios above √ 2. Finally, the displacement transmissibility of a nonlinear isolator with piecewise mixed viscous damping is discussed and the process shows research similarity with the non-piecewise case." @default.
- W2061528779 created "2016-06-24" @default.
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- W2061528779 date "2013-01-01" @default.
- W2061528779 modified "2023-09-23" @default.
- W2061528779 title "Displacement Transmissibility Characteristics of Harmonically Base Excited Damper Isolators with Mixed Viscous Damping" @default.
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- W2061528779 doi "https://doi.org/10.3233/sav-130794" @default.
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