Comparing Road Profiles with Vehicle Perceived Roughness
| Document type: | Journal Articles |
|---|---|
| Article type: | Original article |
| Peer reviewed: | Yes |
| Author(s): | Kjell Ahlin, Johan Granlund, Fredric Lindström |
| Title: | Comparing Road Profiles with Vehicle Perceived Roughness |
| Journal: | International Journal of Vehicle Design |
| Year: | 2004 |
| Volume: | 36 |
| Issue: | 2-3 |
| Pagination: | 270-286 |
| ISSN: | 0143-3369 |
| Publisher: | Inderscience Enterprises |
| City: | Geneva, Switzerland |
| Organization: | Blekinge Institute of Technology |
| Department: | School of Engineering - Dept. of Mechanical Engineering (Sektionen för ingenjörsvetenskap - avd. för maskinteknik) School of Engineering S- 371 79 Karlskrona +46 455 38 50 00 http://www.bth.se/ing/ |
| Language: | English |
| Abstract: | Accurate road profiles are useful in vehicle design, such as for simulation of durability and ride quality. Laser/inertial profilometers typically record I mm wide profiles. The question is how well such a profile matches perceived vehicle wheel roughness. The objective here was to create a more representative wheel track longitudinal profile. Simulated and measured wheel vibration was compared on a 6km long road. Simulations were made for several definitions of the profile. Results for single laser sensor profiles showed reasonable likeness to truck perceived roughness. By far the best likeness (14.5% better) was achieved when the profile was based on triangular 25%-50%-25% weighted data from three sensors in the wheel track. Clearly, vehicle engineers can benefit from using multiple laser profile sensors, instead of a single sensor. This will improve test accuracy, thus reducing vehicle design project lead times and costs. |
| Subject: | Mechanical Engineering\Structural Dynamics |
| Keywords: | footprint, laser sensors, perceived roughness, profilometer, road profile |
