Three-dimensional heterogeneous fracture simulation of asphalt mixture under uniaxial tension with cohesive crack model

被引：73

作者：

Yin, Anyi ^{[1
,2
]}

Yang, Xinhua ^{[1
]}

Zhang, Chuanchuan ^{[1
]}

Zeng, Guowei ^{[1
]}

Yang, Zhenjun ^{[3
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Civil Engn & Mech, Wuhan 430074, Peoples R China

[2] China Acad Engn Phys, Inst Mat, Mianyang 621700, Peoples R China

[3] Univ Manchester, Sch Mech Aerosp & Civil Engn, Manchester M13 9PL, Lancs, England

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2015年 / 76卷

基金：

中国国家自然科学基金;

关键词：

Asphalt mixture; 3D heterogeneous fracture modeling; Random aggregates; Cohesive elements; Crack evolution; DISCRETE-ELEMENT MODELS; QUASI-BRITTLE MATERIALS; ZONE MODEL; MECHANICAL-PROPERTIES; INTERFACE ELEMENTS; IMAGE-ANALYSIS; CONCRETE; AGGREGATE; BEHAVIOR; MODULUS;

D O I：

10.1016/j.conbuildmat.2014.11.065

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A three-dimensional (3D) heterogeneous fracture modeling technology is presented to simulate complex crack evolution in quasi-brittle asphalt mixture. In this technology, the random aggregate generation and packing algorithm is employed to create 3D heterogeneous numerical model of asphalt mixture, and the cohesive elements with the tension/shear softening laws are inserted into both the mastic matrix and the aggregate mastic interfaces as potential cracks. The nucleation and coalescence of microcracks, and inception and propagation of main macrocracks are carefully studied under uniaxial tension and temperature of -10 degrees C. The effects of the averaged coarse aggregate size and the cohesive fracture parameters on performance of asphalt mixture are also evaluated. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：103 / 117

页数：15

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