噪声与振动控制2018，Vol.38Issue(z1)：92-95,4.DOI:10.3969/j.issn.1006-1355.2018.Z1.019
干摩擦阻尼叶片的高保真有限元模型振动特性研究
Investigation of Vibration Characteristics for Dry Friction Damped Blades with High-fidelity Finite Element Model
刘天源 1谢永慧 1张荻1
作者信息
- 1. 西安交通大学 能源与动力工程学院,西安 710049
- 折叠
摘要
Abstract
This paper focus on the vibration characteristics of damped blades for high-fidelity finite element model (FEM) considering dry friction damping. Firstly, the multi-harmonic balance equation is established to predicate the steady response of the bladed-disk under periodic excitation. The component mode synthesis method based on fixed-interface model is applied to reduce the DOFs of the equation. Then, the algorithm to solve the nonlinear multi-harmonic balance equation is given step by step. Finally, high-fidelity FEM of a turbine bladed disk was used to demonstrate the excellent performance with the speed and accuracy of the method. The numerical simulation showed that the method can reduce the time-consuming of the calculation significantly (from 12 hours to 2 hours) while the accuracy keeps appropriate (maximum error 1.36%). Furthermore, the effects of the dry friction were analyzed for the nonlinear vibration characteristics of the blades, which can provide the basis for the design of the damped blades.关键词
振动与波/阻尼叶片/干摩擦阻尼/有限元分析/多谐波平衡法Key words
vibration and wave/damped blades/dry friction damping/finite element analysis/multi-harmonic balance分类
数理科学引用本文复制引用
刘天源,谢永慧,张荻..干摩擦阻尼叶片的高保真有限元模型振动特性研究[J].噪声与振动控制,2018,38(z1):92-95,4.
