Relation Between Seated Person Vibrations and the International Roughness Index

Author:

Múčka Peter1ORCID

Affiliation:

1. Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

Abstract

Vertical vehicle feet/floor interface vibrations are typically not used to indirectly estimate road roughness. The relation for vehicle floor vibrations, the International Roughness Index (IRI), vehicle speed, and road roughness vertical displacement spectrum according to the ISO 8608: 2016 standard was previously derived only for the simulation of a reference quarter-car model. It was estimated using the in situ measurement of vibrations of a person sitting in a passenger car for different vehicle and road categories, vehicle speed, and road roughness. Vibrations at the feet/floor interface and seat surface of a seated passenger were evaluated with the frequency-weighted root-mean-square vertical acceleration according to the ISO 2631-1: 1997 standard. The results indicated that the simulated results for the quarter-car model may have substantially underestimated the ratio between the vehicle floor vibrations of a seated person and the IRI, but they were similar to seat surface vibrations.

Publisher

SAGE Publications

Subject

Mechanical Engineering,Civil and Structural Engineering

Reference40 articles.

1. International Roughness Index specifications around the world

2. Road and airfield surface characteristics - Test methods. Part 5: Determination of longitudinal unevenness indices. EN 13036-5. European Committee for Standardization (CEN), Brussels, 2019.

3. Practice for Computing International Roughness Index of Roads from Longitudinal Profile Measurements

4. Mechanical Vibration and Shock – Evaluation of Human Exposure to Whole-Body Vibration – Part 1: General Requirements. ISO 2631-1. International Standards Organisation (ISO), Geneve, 1997.

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