An Evaluation of Road Roughness and the Effects on Riding Comfort and Vehicle Dynamics

Kawamura, Akira; Kaku, Terutoshi

doi:10.2208/jscej.1985.359_137

Cited by 7 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The nominal parameters of the road are taken to be 𝐿 = 100 (m), 𝑁 = 256 (waves). The frequency is chosen from 0.5 to 50 (Hz) that the road roughness has the most considerable influence on the oscillatory behavior, then the series of angular spatial frequencies are calculated within this range [18].…”

Section: Random Road Profilesmentioning

confidence: 99%

An investigation of a bus’s ride comfort by using the quarter car model with linear asymmetric damper

Le¹,

Tran²

2023

J. vibroeng.

View full text Add to dashboard Cite

The linear asymmetric damper’s effects on the ride comfort, safety, and handling control were investigated to get full understanding of the suspension system design processes of an inner-city bus. The dynamic responses were analyzed for both two cases of linear symmetric and linear asymmetric dampers using the quarter car model with two degrees of freedom (2 DOFs) subjected to random road profiles and single bump cases of triangular and sine-squared bumps. The obtained results show that the linear symmetric damper performs the same as that of the linear asymmetric one in terms of comprehensive performance when the vehicle is subjected to a random road profile. The ride comfort, the working space have been significantly improved in specific range of velocity in case of the linear asymmetric damper. However, in general, slightly better performance has been obtained in the linear symmetric damper case.

show abstract

Section: Random Road Profilesmentioning

confidence: 99%

An investigation of a bus’s ride comfort by using the quarter car model with linear asymmetric damper

Le¹,

Tran²

2023

J. vibroeng.

View full text Add to dashboard Cite

show abstract

“…The measured frequency range, which is the output request for a frequency within 0.1 Hz to 80 Hz, was requested. The vehicle ride vibration due to excitation contributions from road surface roughness ranged from 0.3 to 28 Hz [24], as proposed by Kawamura and Kaku, and the frequency of interest ranged from 0.5 Hz to 50 Hz, as recommended by Kawamura and Kaku [25]. Therefore, the output frequency up to 80 Hz is sufficient to cover the analysis due to road disturbances.…”

Section: Full Ride Dynamic Modelmentioning

confidence: 99%

“…If H xa ( f ) and H xb ( f ) are the complex frequency responses due to the load cases a and b , respectively, then the PSD of the response is as follows [25]:…”

Section: Random Vibrationmentioning

confidence: 99%

See 1 more Smart Citation

Ride Quality Assessment of Bus Suspension System through Modal Frequency Response Approach

Kong

Omar

Chua

et al. 2014

Advances in Mechanical Engineering

View full text Add to dashboard Cite

The ride dynamic characteristics of an urban bus were investigated through simulations with suspension component characteristics and were validated through field measurements. It was performed on highway road at a constant forward speed. A random vibration bus model with two parallel tracks of terrain profile was synthesized with superposition between the left and right sides as well as time delay between front and rear. The bus frequency response model was introduced with embedded modal extraction data to enhance computation efficiency. The simulation results of the bus model were derived in terms of acceleration PSD and frequencyweighted root mean square acceleration along the vertical axes at three locations, namely, driver side, middle, and rear passenger side, to obtain the overall bus ride performance. Another two sets of new leaf spring design were proposed as suspension parameter analysis. The simulation approach provides reasonably good results in evaluating passenger perception on ride and shows that the proposed new spring design can significantly improve the ride quality of the driver and passengers.

show abstract

Simulation and Analysis of Passive vs. Magneto-Rheological Suspension and Seat Dampers

Eshkabilov

Jumaniyazov

Riskaliev

2018

Lecture Notes in Mechanical Engineering

View full text Add to dashboard Cite

An Evaluation of Road Roughness and the Effects on Riding Comfort and Vehicle Dynamics

Cited by 7 publications

References 4 publications

An investigation of a bus’s ride comfort by using the quarter car model with linear asymmetric damper

An investigation of a bus’s ride comfort by using the quarter car model with linear asymmetric damper

Ride Quality Assessment of Bus Suspension System through Modal Frequency Response Approach

Simulation and Analysis of Passive vs. Magneto-Rheological Suspension and Seat Dampers

Contact Info

Product

Resources

About