Hysteretic performance of an eccentric wheel layered friction damper

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (6) : 64-70.

BAI Guoting1，PENG Lingyun1，KANG Yingjie2

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Abstract

A new type of eccentric wheel layered friction damper was proposed in order to solve a series of problems induced by the excessive pressure needed for the normal friction damper.To achieve the goal of obtaining proper damping force under a smaller pressure, parallel multilayer friction plates were adopted.What’s more, a pressure device with eccentric wheels was designed to get a variable friction function and to keep the pre-pressure on the friction surface of the damper at 0 during the standby stage of the service period so as to improve the reliability of the damper and solve the problem of excessive pressure.The performance of the damper was studied through reciprocating load tests.The relation between the damping force and the displacement of the eccentric wheel layered friction damper was obtained, and the mechanical properties of the eccentric wheel layered friction damper were analyzed with finite element method.The results show that the layered design of friction damper can effectively enlarge the friction damping force.The theoretical and finite element simulation results are in good agreement with the experimental results, which shows the results can be used as references for the design of dampers.

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friction damper / variable friction / reciprocating load test / finite element simulation

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BAI Guoting1，PENG Lingyun1，KANG Yingjie2. Hysteretic performance of an eccentric wheel layered friction damper[J]. Journal of Vibration and Shock, 2021, 40(6): 64-70

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