Understanding the fracture mechanism of ring Brazilian disc specimens by the phase field method

被引：42
|
作者：
Zhou, Xiaoping [1 ]
Wang, Longfei [1 ]
Shou, Yundong [2 ]
机构：
[1] Chongqing Univ, Sch Civil Engn, Chongqing 400045, Peoples R China
[2] Wuhan Univ, Sch Civil Engn, Wuhan 430072, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FRACTURE | 2020年 / 226卷 / 01期
基金：
中国国家自然科学基金;
关键词：
The phase field method; Ring Brazilian disc; Crack propagation; Fracture toughness; MIXED-MODE FRACTURE; DYNAMIC CRACK-PROPAGATION; NUMERICAL-SIMULATION; TENSILE-STRENGTH; ROCK; TOUGHNESS; FAILURE; COALESCENCE; BEHAVIOR; SIZE;
D O I：
10.1007/s10704-020-00476-w
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ring Brazilian disc specimens are favored for determining the tensile strength and mixed mode fracture toughness. To further understand the fracture mechanism of ring Brazilian disc specimens, the phase field method is used to investigate the cracking process and peak load of ring Brazilian disc specimens. First, the numerical validity and accuracy of the phase field method is verified by a benchmark example. Then, the effect of aperture ratio and crack inclination angle on the failure process and peak load of ring Brazilian disc specimens is studied. Finally, by combining the phase field method andJ-integral method, the influence of prefabricated crack inclination angle and aperture ratios on mode I and II fracture toughness of cracked ring Brazilian disc specimens is discussed.
引用
收藏
页码：17 / 43
页数：27
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