Numerical and analytical investigation of the size-dependency of the FPZ length in concrete

被引：7

作者：

Aissaoui, Nassima ^{[1
]}

Matallah, Mohammed ^{[1
]}

机构：

[1] Univ Tlemcen, RiSAM, BP 230, Tilimsen, Algeria

来源：

INTERNATIONAL JOURNAL OF FRACTURE | 2017年 / 205卷 / 02期

关键词：

Size effect; Fracture; FPZ length; Mesoscopic modeling; FRACTURE PROCESS ZONE; DIGITAL IMAGE CORRELATION; BRITTLENESS NUMBER; 3-POINT BEND; ENERGY; BEAMS; TOUGHNESS; MESOSCALE; SPECIMEN; TESTS;

D O I：

10.1007/s10704-017-0186-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The main objective of this paper is to study the size effect on the fracture characteristics in concrete structures. The numerical investigation is based on a mesoscale modeling approach. Analytically, two size effect laws are investigated: the classical BaA 3/4 ant SEL and a new size effect law based on the enrichment of the stress field on the crack tip. The mesoscopic approach is used to study the evolution of the tangential stress along the crack path in order to investigate the fracture process zone variation during the cracking process. In addition, different analytical governing equations are used to evaluate the size-dependency of the FPZ length.

引用

页码：127 / 138

页数：12

共 39 条

[1] Determination of size-independent specific fracture energy of concrete from three-point bend and wedge splitting tests [J].