Design And Vibration Stabilization Analysis Of The Caliper Construction In Wind-driven Generator

The construction stabilization of caliper has directly impact on the safety of Generator as the important part of Wind-Driven Generator brake system. Lower vibration has a lot of influence on the life and stabilization of caliper. Bring down the fatigue damage of the caliper by reducing lower vibration displacement of caliper will be significant for improving the braking efficiency. This paper studied the construction stabilization of SVENDBORG Brake of DHI.DCW Group Company, avoid squeal frequency and reduce the displacement of lower vibration by modifying the caliper's construction parameters to enhance the stabilization of caliper. On this foundation, and design a new caliper with optimal structure.Firstly, the working principle and structure of brake is discussed. The finite element model which is established based on the caliper structure. The brake's eighth natural frequency near to squeal frequency which is the most important cause for squeal by model analysis, the result provides the theory basis for analyzing the construction stabilization of brake.Secondly, the paper introduced the theory of Harmonic Response Analysis and get the conclusion that changing the construction parameters can improve the stabilization of brake based on Harmonic Response Analysis of caliper.Structural improvement is done according to the structure of the caliper. The caliper's Topology Optimization should make the change of its structure stiffness and nature frequency as little as possible on the basis of satisfying the intensity. Therefore, to do the Static Analysis and Modal Analysis on caliper becomes necessary. The stress and displacement distribution of the caliper are got by the static analysis. Through Modal Analysis, this paper gain Nature Frequency and Mode Shape. After the Topology Optimal Analysis this paper figure out the optimal material distribution structure and design an ideal model of brake.At last, design the optimal structure of caliper is obtained based on the ideal model and structure dimension through Harmonic Response Analysis of caliper.