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Modelling of road profiles using roughness indicators
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Hållfasthet (BMh).ORCID iD: 0000-0002-6730-0214
2012 (English)Report (Refereed)
Abstract [en]

The vertical road input is the most important load for durability assessments of vehicles. We focus on stochastic modelling of the road profile with the aim to find a simple by still useful model. The proposed non-stationary Laplace model with ISO spectrum has only two parameters, and can be efficiently estimated from a sequence of roughness indicators, such as IRI or ISO roughness coefficient. Thus, a road profile can be stochastically reconstructed from roughness indicators. Further, explicit approximations for the fatigue damage due to Laplace roads are developed. The usefulness of the proposed Laplace-ISO model is validated for eight measured road profiles. Keywords: Road surface profile, road roughness, road irregularity, Laplace process, non-Gaussian process, power spectral density (PSD), ISO spectrum, roughness coefficient, international roughness index (IRI), vehicle durability, fatigue damage.

Place, publisher, year, edition, pages
2012. , 27 p.
Series
SP Rapport, ISSN 0284-5172 ; 2012:43
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-5066Local ID: 13898ISBN: 978-91-87017-61-2 (print)OAI: oai:DiVA.org:ri-5066DiVA: diva2:962705
Available from: 2016-09-07 Created: 2016-09-07 Last updated: 2017-05-02Bibliographically approved

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fulltext(428 kB)47 downloads
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Johannesson, Pär
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
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