Imperial College London
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Professor Norbert Hoffmann

Faculty of Engineering, Department of Mechanical Engineering

Visiting Professor
 
 
 
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Contact

 

n.hoffmann

 
 
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Location

 

557City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Papangelo:2017:10.1016/j.jsv.2017.11.056,
author = {Papangelo, A and Hoffmann, N and Grolet, A and Stender, M and Ciavarella, M},
doi = {10.1016/j.jsv.2017.11.056},
journal = {Journal of Sound and Vibration},
pages = {56--64},
title = {Multiple spatially localized dynamical states in friction-excited oscillator chains},
url = {http://dx.doi.org/10.1016/j.jsv.2017.11.056},
volume = {417},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Friction-induced vibrations are known to affect many engineering applications. Here, we study a chain of friction-excited oscillators with nearest neighbor elastic coupling. The excitation is provided by a moving belt which moves at a certain velocity v d while friction is modelled with an exponentially decaying friction law. It is shown that in a certain range of driving velocities, multiple stable spatially localized solutions exist whose dynamical behavior ( i.e. regular or irregular) depends on the number of oscillators involved in the vibration. The classical non-repeatability of friction-induced vibration problems can be interpreted in light of those multiple stable dynamical states. These states are found within a “snaking-like” bifurcation pattern. Contrary to the classical Anderson localization phenomenon, here the underlying linear system is perfectly homogeneous and localization is solely triggered by the friction nonlinearity.
AU  - Papangelo,A
AU  - Hoffmann,N
AU  - Grolet,A
AU  - Stender,M
AU  - Ciavarella,M
DO  - 10.1016/j.jsv.2017.11.056
EP  - 64
PY  - 2017///
SN  - 0022-460X
SP  - 56
TI  - Multiple spatially localized dynamical states in friction-excited oscillator chains
T2  - Journal of Sound and Vibration
UR  - http://dx.doi.org/10.1016/j.jsv.2017.11.056
UR  - http://hdl.handle.net/10044/1/57171
VL  - 417
ER  -
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