Introducing realistic tire–pavement contact stresses into Pavement Analysis using Nonlinear Damage Approach (PANDA)

Maryam Shakiba, Angeli Gamez, Imad L Al-Qadi, Dallas Neville Little

Research output: Contribution to journalArticle

Abstract

Realistic tire–pavement interface contact areas and stresses were incorporated into the Pavement Analysis using Nonlinear Damage Approach (PANDA) user interface (PUI). PANDA is a software library developed to simulate the complex thermo-viscoelastic–viscoplastic–viscodamage responses of the pavement to mechanical and environmental loads. The PUI is an interface generating a finite element representation of the pavement within PANDA. The application of realistic tire loading is necessary to calculate accurate pavement responses. The PUI incorporates a database of tire contact areas and stresses obtained from tire finite element simulations. The database includes tire interface characteristics with pavements for various applied loads, tire inflation pressures, vehicle speeds and scenarios of different rolling simulations. A parametric study was conducted to investigate the effect of simulations of tire contact stresses that match field measurements on viscoelastic and viscoplastic pavement responses. Pavement responses are greatly affected using realistic tire loading contact stresses and contact geometry as compared to simplified contact models. The impact on rutting and damage predictions cannot be ignored if reliable projections of pavement performance are to be made. This study confirms the importance of considering realistic three-dimensional contact stresses to design and analyse pavements.

Original languageEnglish (US)
Pages (from-to)1027-1038
Number of pages12
JournalInternational Journal of Pavement Engineering
Volume18
Issue number11
DOIs
StatePublished - Nov 2 2017

Keywords

  • PANDA user interface
  • realistic tire–pavement interface
  • viscoelastic–viscoplastic pavement response

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials

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