2D and 3D fracture modeling of asphalt mixture with randomly distributed aggregates and embedded cohesive cracks

被引：32

作者：

Yin, Anyi ^{[1
]}

Yang, Xinhua ^{[1
]}

Yang, Zhenjun

机构：

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

来源：

IUTAM SYMPOSIUM ON MULTISCALE PROBLEMS IN STOCHASTIC MECHANICS | 2013年 / 6卷

基金：

中国国家自然科学基金;

关键词：

asphalt mixture; crcaking; mesoscale modeling; random aggregate generation and packing algorithm; cohesive elements; SIMULATION;

D O I：

10.1016/j.piutam.2013.01.013

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This paper develops a mesoscale finite element method for realistic modeling of complex cohesive fracture in asphalt mixture with a given gradation. A random aggregate generation and packing algorithm is employed to create 2D and 3D heterogeneous asphalt mixture specimens, and cohesive elements with tension/shear softening laws are inserted into both mastic and aggregate-mastic interfaces to simulate crack initiation and propagation. The nucleation and coalescence of microcracks and propagation of macrocracks in 2D and 3D specimens is realistically modeled in detail with a few important conclusions drawn. The effects of coarse aggregate distributions on performance of asphalt mixture are also evaluated. (C) 2013 The Authors. Published by Elsevier B. V. Selection and/or peer review under responsibility of Karlsruhe Institute of Technology (KIT) Institute of the Engineering Mechanics.

引用

页码：114 / 122

页数：9

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