Lattice type of fracture model for concrete

被引：51

作者：

Liu, J. X. ^{[1
]}

Deng, S. C. ^{[1
]}

Zhang, J. ^{[1
]}

Liang, N. G. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China

来源：

THEORETICAL AND APPLIED FRACTURE MECHANICS | 2007年 / 48卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Fracture; Generalized beam (GB) lattice model; Concrete; Particle overlay; Computational effort;

D O I：

10.1016/j.tafmec.2007.08.008

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Concrete is usually described as a three-phase material, where matrix, aggregate and interface zones are distinguished. The beam lattice model has been applied widely by many investigators to simulate fracture processes in concrete. Due to the extremely large computational effort, however, the beam lattice model faces practical difficulties. In our investigation, a new lattice called generalized beam (GB) lattice is developed to reduce computational effort. Numerical experiments conducted on a panel subjected to uniaxial tension show that the GB lattice model can reproduce the load-displacement curves and crack patterns in agreement to what are observed in tests. Moreover, the effects of the particle overlay on the fracture process are discussed in detail. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：269 / 284

页数：16

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