THE MECHANISM OF FRACTURE COALESCENCE IN COMPRESSION - EXPERIMENTAL-STUDY AND NUMERICAL-SIMULATION

被引：184

作者：

SHEN, B

机构：

[1] Engineering Geology, Royal Institute of Technology

来源：

ENGINEERING FRACTURE MECHANICS | 1995年 / 51卷 / 01期

关键词：

421 Strength of Building Materials; Mechanical Properties - 913.1 Production Engineering - 921.6 Numerical Methods;

D O I：

10.1016/0013-7944(94)00201-R

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The mechanism of fracture coalescence is reported from uniaxial compression of gypsum samples with two open or closed cracks. Coalescence can be caused by tensile failure, shear failure or mixed tensile and shear failure. In this paper, the coalescence observed in the tests is modeled numerically by using a modified G-criterion and displacement discontinuity method (DDM). The numerically predicted path and critical load of coalescence are in good agreement with the experimental results. It is also unveiled by this study that mode II failure is the key reason for the coalescence between two non-overlapping cracks.

引用

页码：73 / 85

页数：13

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