Nonlinear vibration of semitrailer suspension: wavelet and multiscale entropy-based approaches
Résumé
We examine the dynamical response of a semitrailer suspension to a real road profile under two different loads. The trailer is a low loader for transporting heavy and large loads, the configuration of which can be adjusted as desired. Experiments are performed on both unladen and 57-ton laden trailers. The acceleration of unsprung and sprung parts of the vehicle is measured. The obtained acceleration time series are then analyzed using the Fourier and wavelet transforms as well as the multiscale entropy approach. The data analysis results reveal transmission of suspension vibration and complexity of vehicle vertical acceleration as a response to the road profile. © 2015, The Author(s).
Mots clés
Amphibious vehicles
Automobile suspensions
Entropy
Fourier series
Magnetic levitation vehicles
Roads and streets
Vehicle suspensions
Vehicle transmissions
Wavelets
Vertical accelerations
Vibration analysis
Vehicles
Vibrations (mechanical)
Wavelet transforms
Acceleration time series
Dynamical response
Multi-scale entropies
Non-linear vibrations
Road profile
Suspension dynamics