@Article{icces.2023.09333,
AUTHOR = {Yadong Zhou, Yile Zhang},
TITLE = {Explicit Dynamics Simulation and Design of Sandwich Composite Structures Reinforced by Multilayer Lattice},
JOURNAL = {The International Conference on Computational \& Experimental Engineering and Sciences},
VOLUME = {25},
YEAR = {2023},
NUMBER = {4},
PAGES = {1--1},
URL = {http://www.techscience.com/icces/v25n4/53878},
ISSN = {1933-2815},
ABSTRACT = {Dynamic	simulation	and	design of	complex	composite	structures	with	energy-absorbing	lattice are	critically	
important for	aircraft	applications.	In	this	study,	high-velocity	impact	behaviors	(deformation	and	damage
modes)	of	sandwich	composite	structures	with	multilayer lattice	are	numerically	studied	by	using	explicit	
dynamics	 computation.	 First,	 the	 modeling	 strategy	 for	 sandwich	 composite	 panels	 with	 the	 multilayer
lattice	and	foam	core	is	developed	by	using	Finite	Element	Method	(FEM).	In	FEM	model,	the	beam,	shell,	
and	solid	elements	are	applied	together for	both	the	computational	accuracy	and	efficiency.	The	unit	cell	
model	of	 the	lattice	is	used	considering	 the	periodicity	of	 the	multilayer structure.	Second,	 the	soft-body	
projectile	to	simulate	the	bird-strike	loading is	modeled	by	using	Smoothed	Particle	Hydrodynamics	(SPH).	
Impact	 dynamics	 behaviors	 (damage	 mechanism, deformation	 modes	 and	 energy	 variation)	 of	 the	
multilayer	lattice-reinforced	panels	are	investigated	in	detail	by	the	FEM/SPH	calculation.	Last,	the	impactresistant performances	of	various lattice designs	are	compared and	assessed.},
DOI = {10.32604/icces.2023.09333}
}