@Article{icces.2023.08918,
AUTHOR = {Liulei Hao, Hongjun Yu, Licheng Guo},
TITLE = {An Experiment-Simulation	Method	for	the	Determination	of	the Mode-II	 Critical	Energy	Release	Rate},
JOURNAL = {The International Conference on Computational \& Experimental Engineering and Sciences},
VOLUME = {26},
YEAR = {2023},
NUMBER = {2},
PAGES = {1--1},
URL = {http://www.techscience.com/icces/v26n2/53902},
ISSN = {1933-2815},
ABSTRACT = {To	overcome	the	harsh	experimental	conditions	of	determining	the	mode-II	critical	energy	release	rate	<i>G<sub>IIC</sub></i>,	
a	flexible	experiment-simulation	method	for	determining	<i>G<sub>IIC</sub></i> 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	 <i>G<sub>IC</sub>/G<sub>IIC</sub></i> to	 reproduce	 the	
experimental	result	so	as	to	determine	the	value	of	<i>G<sub>IIC</sub></i> with	a	known	<i>G<sub>IC</sub></i>.	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	<i>G<sub>IIC</sub></i> 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	<i>G<sub>IIC</sub></i>.	 Furthermore,	 the	 determined	 parameter	 <i>G<sub>IIC</sub></i> is	 used	 to	 develop	 the	 mixed-mode	 phase-field	
model	through	using	the	mode-mixity	factor	(<i>G<sub>IC</sub>/G<sub>IIC</sub></i>)	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	<i>G<sub>IC</sub></i> and	<i>G<sub>IIC</sub></i>.
Without	the	harsh	conditions	of	the	pure	mode-II	fracture,	the	proposed	method	is	of	significant	practice	in	
the	determination	of	<i>G<sub>IIC</sub></i>,	which	benefits the	study	of	mixed-mode	fracture	problems.},
DOI = {10.32604/icces.2023.08918}
}