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A platform for research: civil engineering, architecture and urbanism
Fatigue Cracking Analysis of Asphalt Concrete Based on Coupled XFEM-Continuum Damage Mechanics Method
Fatigue cracking is a major distress in asphalt concrete and has a significant influence on material performance. A coupled extended finite element method (XFEM)-continuum damage mechanics (CDM) model was developed in this paper to investigate fatigue cracking behavior of asphalt concrete. The model was then implemented in commercial finite element software using user-defined subroutines (UMAT and UDMGINI). This model successfully simulated the fatigue damage accumulation stage and crack propagation stage as a continuous process. Determination of model parameters are discussed, and then fatigue crack growth in a semicircular bending (SCB) beam is analyzed. Numerical results of fatigue crack growth in the SCB quantitatively matched well with experimental records. This indicates that the coupled XFEM-CDM method developed in this paper can serve as an effective tool for predicting fatigue cracking behavior of asphalt concrete. Fatigue cracking behavior and mechanical response of a three-point bending beam are also studied. Numerical findings of fatigue cracking lives and stiffness evolution are qualitatively consistent with laboratory results.
Fatigue Cracking Analysis of Asphalt Concrete Based on Coupled XFEM-Continuum Damage Mechanics Method
Fatigue cracking is a major distress in asphalt concrete and has a significant influence on material performance. A coupled extended finite element method (XFEM)-continuum damage mechanics (CDM) model was developed in this paper to investigate fatigue cracking behavior of asphalt concrete. The model was then implemented in commercial finite element software using user-defined subroutines (UMAT and UDMGINI). This model successfully simulated the fatigue damage accumulation stage and crack propagation stage as a continuous process. Determination of model parameters are discussed, and then fatigue crack growth in a semicircular bending (SCB) beam is analyzed. Numerical results of fatigue crack growth in the SCB quantitatively matched well with experimental records. This indicates that the coupled XFEM-CDM method developed in this paper can serve as an effective tool for predicting fatigue cracking behavior of asphalt concrete. Fatigue cracking behavior and mechanical response of a three-point bending beam are also studied. Numerical findings of fatigue cracking lives and stiffness evolution are qualitatively consistent with laboratory results.
Fatigue Cracking Analysis of Asphalt Concrete Based on Coupled XFEM-Continuum Damage Mechanics Method
Jin, Guang-Lai (author) / Zhang, Zhi-Xiang (author) / Huang, Xiao-Ming (author)
2020-10-26
Article (Journal)
Electronic Resource
Unknown
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