Cohesive zone simulation of mode i and mixed-mode crack propagation in asphalt concrete

Seong Hyeok Song, Glaucio Paulino, William G Buttlar

Research output: Contribution to journalConference article

Abstract

A cohesive zone model (CZM) is employed to investigate fracture behavior of asphalt concrete. The separation and traction response along the cohesive zone ahead of a crack tip is modeled by an exponential cohesive law specifically tailored to describe the cracking in asphalt pavement materials by means of a softening cohesive law. This exponential cohesive model is implemented into a user-defined element (UEL) of the ABAQUS software. Using the CZM, first, crack propagation in a mode I single-edge notched beam (SE(B)) test is simulated such that the cohesive parameters of finite material strength and fracture energy are calibrated based upon the experimental results. Then, the mixed-mode SE(B) test is simulated using the calibrated cohesive parameters. The crack trajectory of the numerical simulation is found to compare favorably with experimental results.

Original languageEnglish (US)
Pages (from-to)189-198
Number of pages10
JournalGeotechnical Special Publication
Issue number130-142
StatePublished - Apr 25 2005
EventGeo-Frontiers 2005 - Austin, TX, United States
Duration: Jan 24 2005Jan 26 2005

Keywords

  • Asphalt concrete
  • Cohesive parameters
  • Cohesive zone model (CZM)
  • Fracture behavior
  • Mixed-mode crack propagation
  • Single-edge notched beam (SE(B))

ASJC Scopus subject areas

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

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