欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
将叶轮机叶片简化为悬臂薄板，考虑阻尼的作用，并将叶片所处的环境噪声和空气阻力考虑为简谐载荷。基于Von—karman板的控制理论，建立了考虑阻尼的叶片振动控制方程组。选择一组满足叶片边界条件的模态函数，运用Galerkin法将方程离散，再采用多尺度法对处理后的非线性常微分方程求解。数值分析的结果表明，在线性情况下叶片振动的拍现象比非线性振动更密集，非线性振动的幅频特性曲线存在多值性和跳跃性，叶片的粘性阻尼参数对叶片非线性振动的幅频曲线有影响。
英文摘要：
The model of a turbine blade was established for non-linear vibration analysis. In this model, the blade was simplified as a cantilever plate with the damping effect considered, and the air resistance and environment noise were regarded as a harmonic load. Based on the Von-karman board control theory, the governing equations of forced vibration with sticky damping were established. A group of modal functions which meet the boundary conditions of the blade was chosen. Adopting the Galerkin method, the governing equations were discretized. Using multi-scale method, these equations were solved. Results of the numerical analysis show that the pat phenomenon in non-linear vibration is thinner than that in linear vibration. The non-linear amplitude-frequency response curve is multi-valued and has jumping characteristics. And the damping parameter of the blade has some influence on its amplitude-frequency response curve.
同期刊论文项目
同项目期刊论文
Analytical Model for Beams on Elastic Foundations Considering the Coupling of Horizontal and Vertica
Modeling and parameter analysis of in-plane dynamics of a suspension bridge with transfer matrix met
Large amplitude vibration and parametric instability of inextensional beams on the elastic foundatio
Modal interaction activations and nonlinear dynamic response of shallow arch with both ends vertical
Synchronous Dynamics and Bifurcation Analysis in Two Delay Coupled Oscillators with Recurrent Inhibi
A generalized harmonic function perturbation method for determining limit cycles and homoclinic orbi
Multimode Dynamics of Inextensional Beams on the Elastic Foundation With Two-to-One Internal Resonan
Solutions of a dynamics nonlinear in-plane vibration of suspended cable investigated by the mixed av
Dynamic analysis of flexible cantilever wall retaining elastic soil by a modified Vlasov–Leontiev mo
A novel construction of Quasi-Pade approximation and its application in solving generalized (2+1) di
Three types of staticstatic static bifurcation and control in infinite dimensional dynamical systems
期刊信息
位置：