This paper presents a solution of the vibration reduction in driving automotive shafts.
Generally, vibration modes in automotive driveshafts are divided into the bending and torsional
vibrations. However, the bending vibration is more dominant factor when it excites with the
resonance frequencies in automotive driveshafts. In this paper, the vibration damping structure of
automotive driveshaft is introduced by incorporating piezofiber composite structure, which is also
called as MFC (Macro Fiber Composite). The MFC is an innovative actuator that offers high
performance and flexibility than other piezo-materials, so it is the best candidate of actuator to apply
to the curved surface of shaft. In order to simulate the bending vibration reduction in the automotive
shaft, analytical model based on cylindrical shell theory was developed. Moreover, Finite Element
Analysis (FEA) using the piezoelectric-thermal analogy technique was conducted to confirm the
analytical results and demonstrate the vibration reduction performance. The effect by the polarity of
MFC on the vibration damping is also studied to find the best combination of MFC activation. Thus,
the results showcase the optimal vibration damping capabilities using MFC in automotive driveshafts,
and provide an outlook for the active damping control using the multi-mode resonance controllers.
Vibration damping control of construction machine with long arm manipulator.