CHATTER STABILITY ANALYSIS APPROACH FOR STABILITY ANALYSIS OF ROTATING MACHINERY VIBRATIONS

Year 2017, Volume: 3 Issue: 1, 1 - 17, 30.06.2017

Erol Türkeş

Abstract

Vibration caused by mass
imbalance is an important factor limiting the performance and fatigue life of
the rotating system. Therefore, a balancing procedure is necessary for rotating
systems. Spindle is the main mechanical component in machining centers. Its
performance has a direct impact on the machining productivity and surface
quality of the workpiece. In this paper, regenerative chatter analysis approach
is used for vibrations of rigid rotors with a massless elastic shaft. This
approach is firstly applied in literature by this study. In this study,
Stability Lobe Diagram (SLD) is plotted the boundary between stable and
unstable rotations as a function of spindle speed and imbalance mass. SLD
process can be easily applied between spindle length,
balancing mass amount, location of balancing mass on rotor etc. variable
parameters and spindle speeds for stable rotating system.

Keywords

Rotating machinery, Vibration, Stability analysis

CHATTER STABILITY ANALYSIS APPROACH FOR STABILITY ANALYSIS OF ROTATING MACHINERY VIBRATIONS

Abstract

Vibration caused by mass imbalance is an
important factor limiting the performance and fatigue life of the rotating
system. Therefore, a balancing procedure is necessary for rotating systems. Spindle
is the main mechanical component in machining centers. Its performance has a
direct impact on the machining productivity and surface quality of the
workpiece. In this paper, regenerative chatter analysis approach is used for
vibrations of rigid rotors with a massless elastic shaft. This approach is
firstly applied in literature by this study. In this study, Stability Lobe
Diagram (SLD) is plotted the boundary between stable and unstable rotations as
a function of spindle speed and imbalance mass. SLD process can be easily
applied between spindle length, balancing mass
amount, location of balancing mass on rotor etc. variable parameters and
spindle speeds for stable rotating system.    

Keywords

Rotating machinery, Vibration, Stability analysis

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