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An Experiment-Simulation Method for the Determination of the Mode-II Critical Energy Release Rate
Liulei Hao1, Hongjun Yu1,*, Licheng Guo1
1 Department of Astronautic Science and Mechanics, Harbin Institute of Technology, Harbin, 150001, China
* Corresponding Author: Hongjun Yu. Email:
The International Conference on Computational & Experimental Engineering and Sciences 2023, 26(2), 1-1. https://doi.org/10.32604/icces.2023.08918
Abstract
To overcome the harsh experimental conditions of determining the mode-II critical energy release rate
GIIC,
a flexible experiment-simulation method for determining
GIIC is proposed based on the mixed-mode fracture
experiments and the corresponding simulations by the mixed-mode phase-field model. In details, a mixedmode fracture experiment is first conducted to obtain the initial crack deflection angle. Subsequently, a
series of phase-field simulations are conducted by altering the value of
GIC/GIIC to reproduce the
experimental result so as to determine the value of
GIIC with a known
GIC. Three mixed-mode fracture tests
(single edge cracked circular test, central crack rectangular tension test and compact tension shear test) of
PMMA indicate that the determined
GIIC is a stable material parameter independent of test and loading
conditions. Meanwhile, the determined prediction of GIIC is compared with those in other references with a
deviation of about 3.5%, which demonstrates that the proposed method can quantitatively and qualitatively
obtain
GIIC. Furthermore, the determined parameter
GIIC is used to develop the mixed-mode phase-field
model through using the mode-mixity factor (
GIC/GIIC) to regular the relative contribution of the volumetric
and distortional crack driving energy. As a result, the mixed-mode phase-field model provides better
simulations than the classical phase-field model for the materials with large difference between
GIC and
GIIC.
Without the harsh conditions of the pure mode-II fracture, the proposed method is of significant practice in
the determination of
GIIC, which benefits the study of mixed-mode fracture problems.
Keywords
Cite This Article
APA Style
Hao, L., Yu, H., Guo, L. (2023). An experiment-simulation method for the determination of the mode-ii critical energy release rate. The International Conference on Computational & Experimental Engineering and Sciences, 26(2), 1-1. https://doi.org/10.32604/icces.2023.08918
Vancouver Style
Hao L, Yu H, Guo L. An experiment-simulation method for the determination of the mode-ii critical energy release rate. Int Conf Comput Exp Eng Sciences . 2023;26(2):1-1 https://doi.org/10.32604/icces.2023.08918
IEEE Style
L. Hao, H. Yu, and L. Guo "An Experiment-Simulation Method for the Determination of the Mode-II Critical Energy Release Rate," Int. Conf. Comput. Exp. Eng. Sciences , vol. 26, no. 2, pp. 1-1. 2023. https://doi.org/10.32604/icces.2023.08918