Damage Evolution and Crack Propagation in Semicircular Bending Asphalt Mixture Specimens

The damage and fracture behaviors of semicircular bending (SCB) asphalt mixture specimens with different orientation notches are experimentally and numerically investigated. In the numerical simulations, asphalt mixture is modeled as a two-phase material, namely a mix of coarse aggregates and asphal...

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Bibliographic Details
Published in:Acta mechanica solida Sinica 2016-12, Vol.29 (6), p.596-609
Main Authors: Zeng, Guowei, Yang, Xinhua, Chen, Long, Bai, Fan
Format: Article
Language:English
Subjects:
Classical Mechanics
damage
Engineering
heterogeneous model
notch orientation
semicircular bending
Surfaces and Interfaces
Theoretical and Applied Mechanics
Thin Films
半圆形
弯曲
损伤本构模型
损伤演化
沥青混合料
沥青玛蹄脂
裂纹扩展路径
试件
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Summary:The damage and fracture behaviors of semicircular bending (SCB) asphalt mixture specimens with different orientation notches are experimentally and numerically investigated. In the numerical simulations, asphalt mixture is modeled as a two-phase material, namely a mix of coarse aggregates and asphalt mastic, and the mechanical behavior of asphalt mastic is characterized with the damage constitutive model and the damage-based fracture criterion. Some SCB experiments are performed on the asphalt mixture specimens with different orientation notches to validate the numerical method. Finally, the effects of notch orientation and aggregate distribution on crack path, damage distribution, and the load vs. displacement relation are numerically evaluated.
ISSN:0894-9166
1860-2134
DOI:10.1016/S0894-9166(16)30330-5