Modeling fracture and failure of heterogeneous and inelastic asphaltic materials using the cohesive zone concept and the finite element method

Francisco Thiago Sacramento Aragão, Yong Rak Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

This study presents a computational micromechanics approach based on the finite element method (FEM) to model heterogeneous, inelastic asphalt mixtures with rate-dependent fracture failure. The model accounts for the mixture heterogeneity as FEM meshes are generated from the digital images of actual specimens. The inelastic nature of the mixtures is modeled by including the viscoelastic constitutive relation of the material and the fracture process zone, which is modeled by the cohesive zone concept. A computational modeling framework and related experimental protocols are presented, and the applicability of the model is demonstrated through virtual testing simulations of asphalt concrete mixtures. Model simulations are discussed by comparing predictions to the laboratory test results. It is expected that the model with further improvements can provide better insights into the effects of mixture constituents on the overall mixture's performance, while reducing modeling efforts and achieving significant savings in experimental costs and time.

Original languageEnglish (US)
Title of host publicationGeoFlorida 2010
Subtitle of host publicationAdvances in Analysis, Modeling and Design - Proceedings of the GeoFlorida 2010 Conference
Pages2662-2671
Number of pages10
Edition199
DOIs
StatePublished - Dec 1 2010
EventGeoFlorida 2010: Advances in Analysis, Modeling and Design Conference - West Palm Beach, FL, United States
Duration: Feb 20 2010Feb 24 2010

Publication series

NameGeotechnical Special Publication
Number199
ISSN (Print)0895-0563

Other

OtherGeoFlorida 2010: Advances in Analysis, Modeling and Design Conference
CountryUnited States
CityWest Palm Beach, FL
Period2/20/102/24/10

Keywords

  • Asphalts
  • Cracking
  • Finite element method
  • Heterogeneity
  • Inelasticity

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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    Aragão, F. T. S., & Kim, Y. R. (2010). Modeling fracture and failure of heterogeneous and inelastic asphaltic materials using the cohesive zone concept and the finite element method. In GeoFlorida 2010: Advances in Analysis, Modeling and Design - Proceedings of the GeoFlorida 2010 Conference (199 ed., pp. 2662-2671). (Geotechnical Special Publication; No. 199). https://doi.org/10.1061/41095(365)270