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- W4223647079 abstract "Abstract In the experiment, we observed such a phenomenon: the alternating normal force changes the vibration state of a friction system. A single-degree-of-freedom mathematical model was used in this paper to discuss the effects of a constant and alternating normal force on the stick-slip vibration characteristics for different dynamic and static friction coefficients. Under the condition that the applied constant normal force continues to increase, the vibration amplitude of the system, the amplitude of the limit cycle, and the adhesion time of the system increase. When the difference between the dynamic and static friction coefficients (DSFC) is small, the system has a complete and clear limit cycle. When the dynamic friction coefficient is reduced, the difference between DSFC increases, and the limit cycle of the system is deformed. The friction system has more abundant dynamic vibration characteristics under an alternating normal force than a constant normal force. The vibration state of the system presents a single-cycle stick-slip vibration when the alternating normal force excites the multi-order harmonic response of the friction system, and the excitation frequency of the alternating normal force is the same as the main response frequency of the system with the highest energy or the low-order even-order main frequency. In contrast, the system exhibits various vibration modes when the excitation frequency of the alternating normal force is dissimilar to the main frequency of the system's highest energy response or is consistent with the odd-order main frequency. In addition, increasing the difference between DSFC or using very high excitation frequencies and excitation amplitudes increase the likelihood of the system entering a chaotic vibration state." @default.
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- W4223647079 date "2022-04-05" @default.
- W4223647079 modified "2023-09-28" @default.
- W4223647079 title "The Effect of Dynamic Normal Force on the Stick-slip Vibration Characteristics" @default.
- W4223647079 doi "https://doi.org/10.21203/rs.3.rs-1199501/v1" @default.
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