考虑参数关联的缘板阻尼器减振性能分析

The correlation between principal parameters of wedge underplatform dampers (UPDs) was established to reveal the influence of these relevant parameters on the damping effect, and then to summarize the design guidelines considering parameter correlation.Based on the lumped parameter model of a two blades⁃UPD system which can describe the motion containing phase lag between blades, the steady state response of the system was simulated by the multi⁃harmonic balance method (MHBM), and the reduction of the resonance amplitude was used to quantify the damping performance.In order to improve the convergence and efficiency of the algorithm, the Jacobian matrix was deduced analytically.Results showed that it was necessary to consider the parameter correlation.The damper performance of wedge UPDs can be optimized to 4.57% by choosing larger material density and appropriate wedge angles.Asymmetric wedge dampers can further improve the damping effect under excitation with phase lag.