TY  - EJOU
AU  - Lu, Yao 
AU  - Chen, Jianyu 
AU  - Feng, Dianlei 
AU  - Liu, Moubin 

TI  - GPU-Accelerated	Numerical	Modeling	of	Hypervelocity	Impacts	on	CFRP	 Using	SPH
T2  - The International Conference on Computational \& Experimental Engineering and Sciences

PY  - 2023
VL  - 25
IS  - 3
SN  - 1933-2815

AB  - CFRPs	(carbon	fiber	reinforced	plastics),	as	a	kind	of	fiber-reinforced	plastic,	present	various	advantages	
over	traditional	materials	regarding	the	specific	strength,	stiffness,	and	corrosion	resistance.	For	this	reason,	
CFRPs	are	widely	used	in	the	space	industry,	like	satellites	and	space	stations,	which	are	easily	subjected	to	
the	HVIs	(hypervelocity	impacts)	threatened	by	space	debris.	In	order	to	mitigate	the	damage	of	HVIs	and	
protect	 the	 spatial	 structures,	 it	 is	 necessary	 to	 predict	 the	 HVI	 process	 on	 CFRPs.	 Smoothed	 particle	
hydrodynamics	(SPH)	method,	as	a	mesh-free	particle-based	method,	has	been	widely	applied	for	modeling	
HVI	problems	due	to	its	special	advantages	when	modeling problems	with	large	deformations	[1].	Also,	SPH	
is	 attractive	 for	 parallel	 computing,	 benefiting	 from	 its	 particle-based	 nature	 [2].	 Considering	 such	
advantages,	we	present	a	GPU-accelerated	HVI	model	 for	composite	CFRPs	 structures	based	 on	 the	SPH	
method in	 this	 talk.	 Firstly,	 a	 metallic	 penetration	 problem	 is	 studied	 as	 a	 test	 example	 to	 validate	 the	
numerical	model.	The	simulation	results	agreed	well	with	the	published	data,	and	nearly	350	times	of	speedup	(GPU	vs	CPU)	has	been	achieved.	Then,	 the	process	of	a	bullet	penetrating	a	CFRP	laminate	has	been	
investigated	and	the	corresponding	physical	behaviors,	such	as	the	orthotropic	property,	shock	response,	
and	delamination	have	been	well	captured	as	well.	Finally,	the	HVI	problem	of	the	Whipple	bumper	shield,	
one	of	the	typical	shields	for	spatial	structures,	has	been	investigated	considering	the	secondary	debris	cloud	
and	the	damage	effects.	Our	studies	have	shown	that	the	GPU-accelerated	SPH	model	allows	us	to	investigate	
three-dimensional	HVI	problems with	complex	composite	structures	accurately	and	efficiently.
KW  - Space	 debris;	 hypervelocity	 impact	 (HVI);	 carbon	 fiber	 reinforced	 plastics	 (CFRPs);	 smoothed	 particle	 hydrodynamics	(SPH);	GPU	parallelization

DO  - 10.32604/icces.2023.010004