偏心轮叠层摩擦阻尼器的滞回性能研究

new type of eccentric wheel layered friction damper was proposed in order to solve a series of problems made by normal friction damper. To achieve the goal of obtain the damping force under a smaller pressure, the parallel multilayer friction plates were set. What\'s more, the pressure device of eccentric wheels were set to make friction variable, and the pre-pressure of the friction surface of the damper kept at 0 during the standby stage of the service period, improving the reliability of the damper and solving the problem of excessive pressure. The performance of the damper was studied by reciprocating load test. The relation between damping force and displacement of the eccentric wheel layered friction damper was obtained, and the mechanical properties of the eccentric wheel layered friction damper were analyzed by finite element method. The results show that the layered design of damper\'s friction plate can effectively enlarge the friction damping force. The theoretical formula and finite element simulation result are in good agreement with the experimental result, which can be used as references for the design of the damper.