THE EFFECTS OF BRACINGS IN ELIMINATION OF VIBRATION LOCALIZATION IN MISTUNED BLADED-DISK ASSEMBLIES

来源 :The Third International Conference on Dynamics,Vibration and | 被引量 : 0次 | 上传用户：ynjdxyzzz

【摘要】

：

A turbo disk can be regarded as a periodic system if all of the blades are assembled periodically.In some turbo disks, like steam turbines, the blades are assembled into periodic groups of blades and

【作者】

：

D.Q.Cao D.Wei Y.L.Zhou

【机构】

：

School of Astronautics,Harbin Institute of Technology,PO Box 137,Harbin 150001,China

【出处】

：

The Third International Conference on Dynamics,Vibration and

【发表日期】

：

2010年4期

【关键词】

：

vibration localization bladed-disk assemblies periodic structures properties of

下载到本地 , 更方便阅读

下载此文赞助VIP

声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架

论文部分内容阅读

　　A turbo disk can be regarded as a periodic system if all of the blades are assembled periodically.In some turbo disks, like steam turbines, the blades are assembled into periodic groups of blades and the disks can be also regarded as a periodic system.Cyclic fatigue during operation frequentlx causes cracks to appear in rotating turbo disks.Cracks near the roots of the blades may change local flexibility and introduce into so-called local structures irregularity.This leads to the mistuning of bladed-disk assemblies.The local defects may introduce a localization vibration in the periodic system.The interaction between this localized vibration and the propagation of cracks may cause the blade to fail fatally.

其他文献

Global Attractivity of a Nonlinear Delay Differential Equation with Applications

Consider the nonlinear delay differental equation (x)(t)=p(t)[f(x(t-(τ))-g(x(t)),t≥0 where (τ)∈(0,∞),p∈C[(0,∞),(0,∞)] and f,g ∈[(α,∞),(0,∞)]with α≥-∞.

会议

GREEN FUNCTIONS OF A CLASS OF NONLINEAR DEGENERATE OPERATORS AND APPLICATION

In this talk, a generalization of the usual Green function of Lapalcian operators to a class of nonlinear degenerate operators with X-ellipticiry is considered.Maximum principle and some apriori estim

会议

ROBUST EXPONENTIAL STABILITY OF NEURAL NETWORKS WITH TIME-DEPENDENT SWITCHING DYNAMICS

In designs and applications of dynamic systems, it is not uncommon for their dynamics to switch between two or more configurations.A switching dynamic system is composed of a family of configurations

会议

A TEST EVALUATION OF A PILOT-INDUCED-OSCILLATION PREDICTION CRITERION

This paper presents evaluation procedures, concepts, and results from a limited test to evaluate the ability of the Open-Loop Onset Point (OLOP) criterion to predict Pilot-Induced-Oscillations (PIO) i

会议

Open-Loop Onset Point (OLOP) criterionPilot-Induced-Oscillations (PIO)flight c

BIFURCATION ANALYSIS OF NEARLY NONSMOOTH OSCILLATIONS IN INPUT-CONSTRAINED FLIGHT CONTROL SYSTEMS

Numerical bifurcation analysis using continuation methods has emerged as a valuable component in the analysis of mathematical models described by differential equations.The application of bifurcation

会议

Flight controlnonlinear systemcontrol constraintsbifurcation analysislimit c

DESIGN AND ANALYSIS OF COMBINED NONLINEAR DYNAMIC INVERSION AND H∞-BASED FLIGHT CONTROL LAWS

There is a significant interest in developing flight control laws which need minimum gain scheduling across the whole flight envelope while providing required robust performance and stability properti

会议

Nonlinear dynamic inversionH∞-based control designrobust performance and stabi

FLAP-LAG STABILITY OF HELICOPTER ROTOR BLADES USING CONTINUATION AND BIFURCATION METHODS

The stability of a helicopter rotor blade is a complex problem, involving aerodynamic, structural.material and geometric nonlinearities.Different mathematical techniques have been used in the past to

会议

Nonlinear periodic systemblade stabilityflap-lag stability helicopterbifurcat

MODELING AND CONTROL OF A MICRO FLAPPING WING ROTORCRAFT

Micro aerial vehicles (MAVs) have drawn a great deal of interest in the past decade due to the advances in micro technology.Most research groups working on MAVs today based their designs on fixed, rot

会议

Flapping wingmicro rotorcraftelectromagnetic actuatorperiodic control

Modeling of Small Unmanned Aircraft with new configuration for Flight Control System Design

In the past few ten years so m any kinds of "vertical takeoffand land (VTOL) " aircraft came out.With new configuration, they have the advantages of both helicopters and airplanes.The flight envelope

会议

flight dynamicsSmall Unmanned Aircraftnew configuration flight control system

RECONFIGURATION OF TETHERED SATELLITE FORMATIONS AT A COLLINEAR LIBRATION POINT

The idea of using space tethers for tethered satellite formations has received a great deal of attention in recent years with some existing research on concepts and applications [1].The advantage of u

会议

Collinear libration point orbitstethered satellite formationsreconfigurationn

THE EFFECTS OF BRACINGS IN ELIMINATION OF VIBRATION LOCALIZATION IN MISTUNED BLADED-DISK ASSEMBLIES

与本文相关的学术论文