Vibration Suppression of Railway Car Body with Piezoelectric Elements
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TLDR
In this article, a new method for improving riding comfort by reducing vertical flexural vibrations in railway car bodies using piezoelectric elements is studied. But this method requires the car body as an elastically supported Bernoulli-Euler beam, and theoretical analysis and numerical simulations are carried out.Abstract:
A new method for improving riding comfort by reducing vertical flexural vibrations in railway car bodies using piezoelectric elements is studied in this paper. Piezoelectric elements are attached on the car body in order to convert vibration energy to electrical energy, which can be dissipated in a shunt circuit. Assuming the car body as an elastically supported Bernoulli-Euler beam, theoretical analysis and numerical simulations are carried out. The numerical results are supplemented by experiments on a 1:5 scale model of a Shinkansen vehicle. Both numerical and experimental results indicate that the method yields significant vibration suppression with only a small amount of added weight. Two types of shunt circuits; a single-mode circuit and a multi-mode circuit are studied.read more
Citations
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A new passive approach to reducing the carbody vertical bending vibration of railway vehicles
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Vibration damping of a flexible car body structure using piezo-stack actuators
TL;DR: In this paper, a piezo-stack actuators mounted in consoles are utilized to actively dampen vibrations of a flexible car body structure by introducing bending moments, and the complete design for the active vibration damping system is presented.
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Impact vibration behavior of railway vehicles: a state-of-the-art overview
TL;DR: A comprehensive overview of recent studies on the impact vibration behavior of railway vehicles was given in this article, where the sources of impact excitations were categorized in terms of wheel-rail contact irregularity, aerodynamic loads and longitudinal impulses by train traction/braking.
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Coupled vibration of passenger and lightweight car-body in consideration of human-body biomechanics
TL;DR: In this article, a special experimental set-up was made in order to investigate the coupled vibration of human body and flexible car body, the mass ratio of which is analogous to that of passengers and actual railway vehicles.
References
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Edward F. Crawley,Javier de Luis +1 more
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