scholarly journals A phase-field model for mixed-mode fracture based on a unified tensile fracture criterion

2020 ◽  
Vol 370 ◽  
pp. 113270 ◽  
Author(s):  
Qiao Wang ◽  
Y.T. Feng ◽  
Wei Zhou ◽  
Yonggang Cheng ◽  
Gang Ma
Keyword(s):  
Phase Field ◽  
Mixed Mode ◽  
Fracture Criterion ◽  
Field Model ◽  
Phase Field Model ◽  
Tensile Fracture ◽  
Mixed Mode Fracture ◽  
Mode Fracture

An Energy Gradient Fracture Criterion Based on Virtual Crack Vector Model with Application to T-Stress Problem

2004 ◽  
Vol 261-263 ◽  
pp. 135-140
Author(s):  
D.A. Liu ◽  
Li Yun Li ◽  
Q.F. Yuan ◽  
D.X. Cheng
Keyword(s):  
Mixed Mode ◽  
Fracture Criterion ◽  
Biaxial Tension ◽  
Vector Model ◽  
Tensile Fracture ◽  
Mixed Mode Fracture ◽  
Mode Fracture ◽  
Critical Fracture ◽  
Energy Gradient ◽  
T Stress

A virtual crack vector model is proposed in this paper to simulate the branched crack propagation and simplify its calculation of energy release rate. An energy gradient fracture criterion is constructed based on this model. It can take account of the effects of biaxial loads or T-stress on brittle mixed mode fracture and agrees well with the test data of biaxial tensile fracture and the specially conducted experiment of the influences of ox on the mixed mode fracture of plexiglas. Considering its advantage of predicting initial propagation angle and critical fracture stress independently without the determination of the core region radius, it can be used as a practical fracture criterion for brittle mixed mode fracture under biaxial tension.

scholarly journals A quasi-monolithic phase-field description for mixed-mode fracture using predictor–corrector mesh adaptivity

2021 ◽  
Author(s):  
Meng Fan ◽  
Yan Jin ◽  
Thomas Wick
Keyword(s):  
Phase Field ◽  
Mixed Mode ◽  
Splitting Method ◽  
Fracture Model ◽  
Mixed Mode Fracture ◽  
Energy Splitting ◽  
Mesh Adaptivity ◽  
Mode Fracture ◽  
New Model ◽  
Fracture Models

AbstractIn this work, we develop a mixed-mode phase-field fracture model employing a parallel-adaptive quasi-monolithic framework. In nature, failure of rocks and rock-like materials is usually accompanied by the propagation of mixed-mode fractures. To address this aspect, some recent studies have incorporated mixed-mode fracture propagation criteria to classical phase-field fracture models, and new energy splitting methods were proposed to split the total crack driving energy into mode-I and mode-II parts. As extension in this work, a splitting method for masonry-like materials is modified and incorporated into the mixed-mode phase-field fracture model. A robust, accurate and efficient parallel-adaptive quasi-monolithic framework serves as basis for the implementation of our new model. Three numerical tests are carried out, and the results of the new model are compared to those of existing models, demonstrating the numerical robustness and physical soundness of the new model. In total, six models are computationally analyzed and compared.

A new mixed-mode fracture criterion of anisotropic rock

2021 ◽  
pp. 107730
Author(s):  
Dong-Liang Sun ◽  
Qiu-hua Rao ◽  
Shan-Yong Wang ◽  
Wei Yi ◽  
Qing-qing Shen
Keyword(s):  
Mixed Mode ◽  
Fracture Criterion ◽  
Mixed Mode Fracture ◽  
Anisotropic Rock ◽  
Mode Fracture ◽  
Mixed Mode Fracture Criterion

A Mixed-Mode Fracture Criterion for Composite Materials

1983 ◽  
Vol 5 (1) ◽  
pp. 26 ◽  
Author(s):  
WW Feng ◽  
KL Reifsnider ◽  
GP Sendeckyj ◽  
TT Chiao ◽  
PL Lien ◽  
...  
Keyword(s):  
Composite Materials ◽  
Mixed Mode ◽  
Fracture Criterion ◽  
Mixed Mode Fracture ◽  
Mode Fracture ◽  
Mixed Mode Fracture Criterion
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