Effect of Rider Posture on Bicycle Comfort

Polanco, Alejandra; Marconi, Edoardo; Muñoz, Luis; Suárez, Daniel R.; Doria, Alberto

doi:10.1115/detc2019-97763

Cited by 6 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These differences may be caused by some phenomena that are present on the road but are not considered in laboratory tests. On the road, due to the active state of the rider, the body posture may differ from the one adopted during the laboratory tests [8,36]. Even if the quality of the bicycle lane is good, the presence of small localised defects that generate impulsive excitations is unavoidable.…”

Section: Comparison Between Laboratory Predictions and Road Tests Resultsmentioning

confidence: 99%

An experimental-numerical method for the prediction of on-road comfort of city bicycles

Doria

Marconi

Muñoz

et al. 2020

Vehicle System Dynamics

Self Cite

View full text Add to dashboard Cite

A low-cost experimental-numerical method for the prediction of on-road comfort of city bicycles is presented. Experimental tests are performed by exciting the wheels of the bicycle with impulsive vibrations and measuring the frequency response functions (FRFs) between different sensitive points of the bicycle (i.e. seatpost and steerer tube) and the wheels. Laboratory tests are carried out with the rider on the bicycle, and the posture is carefully checked. A mathematical model is employed to predict the accelerations experienced by the rider on the road, considering tyre and wheelbase filtering. As a verification of the proposed methodology, comfort predictions obtained with the experimental-numerical method are compared with reference data obtained from road tests. A general agreement in terms of the root mean square values and power spectral densities is found.

show abstract

Section: Comparison Between Laboratory Predictions and Road Tests Resultsmentioning

confidence: 99%

An experimental-numerical method for the prediction of on-road comfort of city bicycles

Doria

Marconi

Muñoz

et al. 2020

Vehicle System Dynamics

Self Cite

View full text Add to dashboard Cite

show abstract

“…In fact, for e-scooters the driver represents almost 90% of the total mass of the system and its dynamic properties significantly influence the overall dynamic behavior of the vehicle. This has been proven for bicycles, that show a driver/vehicle mass ratio like that of e-scooters, for which it has been demonstrated that the rider posture influences its comfort [5] and that the modal properties of the system with or without the rider change significantly [6].…”

Section: Introductionmentioning

confidence: 91%

Modelling of the Vertical Dynamics of an Electric Kick Scooter

Asperti

Vignati

Braghin

2022

IEEE Trans. Intell. Transport. Syst.

View full text Add to dashboard Cite

Nowadays, micro-mobility is one of the major global trends in cities for the innovation of the transport system. In this context a breakthrough introduction of electric kick scooters (e-scooters) has taken place. Unfortunately, these mobility systems cause several accidents mainly for two reasons: wrong use and inadequate safety requirements. Since e-scooters are quite a new type of vehicle, generally accepted mathematical models are yet to be developed. These models can be useful in understanding the dynamical properties of this type of vehicle thus improving its design to reduce riding accidents. The present paper presents a model for the simulation of the vertical dynamic behavior of e-scooters that accounts also for the mechanical impedance of the driver, thus allowing to estimate the overall driver's comfort and road holding capabilities providing information on possible speed limitations in case of bad road conditions. Furthermore, the paper shows experimental envelope curves for lumped obstacles obtained with a dedicated test bench on which the e-scooter is fixed and tested under different conditions of vertical load and tire inflation pressure.

show abstract