TY  - EJOU
AU  - Zhang, Jiaming 
AU  - Chu, Xihua 

TI  - A	Coupled	Hygro-Thermo-Mechanical	Bond-Based	Cosserat	Peridynamic	 Porous	Media	Model	for	Heated	Fracture	of	Concrete
T2  - The International Conference on Computational \& Experimental Engineering and Sciences

PY  - 2023
VL  - 26
IS  - 3
SN  - 1933-2815

AB  - This	 paper	 presents	 a	 fully	 coupled	 hygro-thermo-mechanical	 bond-based	 Cosserat	 peridynamic	 porous	
media	model	 for	 concrete	 at	 high	temperature [1-3].	 The	model	 enables	 the	 problem	 of	 Poisson's	 ratio	
limitation	to	be	relieved	and	the	effect	of	cement	particle	size	and	its	independent	micro-rotation	to	be	taken	
into	account [4].	A	multi-rate	explicit	integration	strategy	is	proposed,	which	allows	this	complex	multi-field	
fully	 coupled	governing	equation	 to	 be	well	 solved.	Numerical	 simulations	mainly	 focus	 on	 the	 terms	 of	
temperature,	water	vapour	pressure	and	damage	level	to	verify	the	validity	of	the	model [5-9].	And	they	
additionally	demonstrate	the	effect	of	cement	particle	size	and	importance	of	value	of	critical	fracture	energy	
on	mechanical	properties	and	crack	propagation	of	heated	concrete.	Numerical	results	show	the	model	has	
a	good	performance	in	modeling	heated	fracture	of	concrete	at	high	temperature.
KW  - Bond-based	Cosserat	peridynamics;	multi-physics;	hygro-thermal	behaviors;	fracture	of	heated	concrete

DO  - 10.32604/icces.2023.09055