id	sid	tid	token	lemma	pos
4b29b566213	1	1	two	two	NUM
4b29b566213	1	2	methods	method	NOUN
4b29b566213	1	3	and	and	CCONJ
4b29b566213	1	4	models	model	NOUN
4b29b566213	1	5	are	be	AUX
4b29b566213	1	6	presented	present	VERB
4b29b566213	1	7	to	to	PART
4b29b566213	1	8	solve	solve	VERB
4b29b566213	1	9	the	the	DET
4b29b566213	1	10	nonlinear	nonlinear	ADJ
4b29b566213	1	11	wave	wave	NOUN
4b29b566213	1	12	equation	equation	NOUN
4b29b566213	1	13	with	with	ADP
4b29b566213	1	14	shock	shock	NOUN
4b29b566213	1	15	formation	formation	NOUN
4b29b566213	1	16	using	use	VERB
4b29b566213	1	17	mass	mass	PROPN
4b29b566213	1	18	,	,	PUNCT
4b29b566213	1	19	momentum	momentum	NOUN
4b29b566213	1	20	,	,	PUNCT
4b29b566213	1	21	and	and	CCONJ
4b29b566213	1	22	energy	energy	NOUN
4b29b566213	1	23	conservation	conservation	NOUN
4b29b566213	1	24	in	in	ADP
4b29b566213	1	25	multi	multi	NOUN
4b29b566213	1	26	-	-	NOUN
4b29b566213	1	27	layer	layer	ADJ
4b29b566213	1	28	one	one	NUM
4b29b566213	1	29	-	-	PUNCT
4b29b566213	1	30	dimensional	dimensional	ADJ
4b29b566213	1	31	rods	rod	NOUN
4b29b566213	1	32	made	make	VERB
4b29b566213	1	33	of	of	ADP
4b29b566213	1	34	cellular	cellular	ADJ
4b29b566213	1	35	material	material	NOUN
4b29b566213	1	36	.	.	PUNCT
4b29b566213	2	1	using	use	VERB
4b29b566213	2	2	the	the	DET
4b29b566213	2	3	method	method	NOUN
4b29b566213	2	4	of	of	ADP
4b29b566213	2	5	characteristics	characteristic	NOUN
4b29b566213	2	6	,	,	PUNCT
4b29b566213	2	7	the	the	DET
4b29b566213	2	8	rigid	rigid	ADJ
4b29b566213	2	9	-	-	PUNCT
4b29b566213	2	10	perfectly	perfectly	ADV
4b29b566213	2	11	-	-	PUNCT
4b29b566213	2	12	plastic	plastic	NOUN
4b29b566213	2	13	-	-	PUNCT
4b29b566213	2	14	locking	lock	VERB
4b29b566213	2	15	model	model	NOUN
4b29b566213	2	16	is	be	AUX
4b29b566213	2	17	proven	prove	VERB
4b29b566213	2	18	to	to	PART
4b29b566213	2	19	be	be	AUX
4b29b566213	2	20	unable	unable	ADJ
4b29b566213	2	21	to	to	PART
4b29b566213	2	22	predict	predict	VERB
4b29b566213	2	23	shock	shock	NOUN
4b29b566213	2	24	formation	formation	NOUN
4b29b566213	2	25	at	at	ADP
4b29b566213	2	26	a	a	DET
4b29b566213	2	27	material	material	ADJ
4b29b566213	2	28	interface	interface	NOUN
4b29b566213	2	29	.	.	PUNCT
4b29b566213	3	1	thus	thus	ADV
4b29b566213	3	2	,	,	PUNCT
4b29b566213	3	3	a	a	DET
4b29b566213	3	4	rate	rate	NOUN
4b29b566213	3	5	-	-	PUNCT
4b29b566213	3	6	independent	independent	ADJ
4b29b566213	3	7	mechanical	mechanical	ADJ
4b29b566213	3	8	model	model	NOUN
4b29b566213	3	9	is	be	AUX
4b29b566213	3	10	proposed	propose	VERB
4b29b566213	3	11	and	and	CCONJ
4b29b566213	3	12	incorporates	incorporate	VERB
4b29b566213	3	13	an	an	DET
4b29b566213	3	14	elastic	elastic	ADJ
4b29b566213	3	15	-	-	PUNCT
4b29b566213	3	16	plastic	plastic	NOUN
4b29b566213	3	17	-	-	PUNCT
4b29b566213	3	18	densifying	densifye	VERB
4b29b566213	3	19	material	material	NOUN
4b29b566213	3	20	model	model	NOUN
4b29b566213	3	21	to	to	PART
4b29b566213	3	22	describe	describe	VERB
4b29b566213	3	23	the	the	DET
4b29b566213	3	24	stress	stress	NOUN
4b29b566213	3	25	-	-	PUNCT
4b29b566213	3	26	strain	strain	NOUN
4b29b566213	3	27	behavior	behavior	NOUN
4b29b566213	3	28	of	of	ADP
4b29b566213	3	29	the	the	DET
4b29b566213	3	30	cellular	cellular	ADJ
4b29b566213	3	31	materials	material	NOUN
4b29b566213	3	32	.	.	PUNCT
4b29b566213	4	1	the	the	DET
4b29b566213	4	2	conditions	condition	NOUN
4b29b566213	4	3	for	for	ADP
4b29b566213	4	4	shock	shock	NOUN
4b29b566213	4	5	formation	formation	NOUN
4b29b566213	4	6	at	at	ADP
4b29b566213	4	7	a	a	DET
4b29b566213	4	8	material	material	ADJ
4b29b566213	4	9	interface	interface	NOUN
4b29b566213	4	10	are	be	AUX
4b29b566213	4	11	provided	provide	VERB
4b29b566213	4	12	.	.	PUNCT
4b29b566213	5	1	a	a	DET
4b29b566213	5	2	two	two	NUM
4b29b566213	5	3	-	-	PUNCT
4b29b566213	5	4	layer	layer	NOUN
4b29b566213	5	5	analysis	analysis	NOUN
4b29b566213	5	6	is	be	AUX
4b29b566213	5	7	conducted	conduct	VERB
4b29b566213	5	8	to	to	PART
4b29b566213	5	9	gain	gain	VERB
4b29b566213	5	10	insights	insight	NOUN
4b29b566213	5	11	into	into	ADP
4b29b566213	5	12	the	the	DET
4b29b566213	5	13	behavior	behavior	NOUN
4b29b566213	5	14	of	of	ADP
4b29b566213	5	15	two	two	NUM
4b29b566213	5	16	-	-	PUNCT
4b29b566213	5	17	layer	layer	NOUN
4b29b566213	5	18	cellular	cellular	ADJ
4b29b566213	5	19	systems	system	NOUN
4b29b566213	5	20	and	and	CCONJ
4b29b566213	5	21	to	to	PART
4b29b566213	5	22	determine	determine	VERB
4b29b566213	5	23	which	which	DET
4b29b566213	5	24	material	material	NOUN
4b29b566213	5	25	properties	property	NOUN
4b29b566213	5	26	are	be	AUX
4b29b566213	5	27	most	most	ADV
4b29b566213	5	28	important	important	ADJ
4b29b566213	5	29	for	for	ADP
4b29b566213	5	30	design	design	NOUN
4b29b566213	5	31	.	.	PUNCT
4b29b566213	6	1	finally	finally	ADV
4b29b566213	6	2	,	,	PUNCT
4b29b566213	6	3	the	the	DET
4b29b566213	6	4	significant	significant	ADJ
4b29b566213	6	5	parameters	parameter	NOUN
4b29b566213	6	6	are	be	AUX
4b29b566213	6	7	optimized	optimize	VERB
4b29b566213	6	8	to	to	PART
4b29b566213	6	9	reduce	reduce	VERB
4b29b566213	6	10	the	the	DET
4b29b566213	6	11	length	length	NOUN
4b29b566213	6	12	of	of	ADP
4b29b566213	6	13	oneand	oneand	NOUN
4b29b566213	6	14	two	two	NUM
4b29b566213	6	15	-	-	PUNCT
4b29b566213	6	16	layered	layered	ADJ
4b29b566213	6	17	cellular	cellular	ADJ
4b29b566213	6	18	systems	system	NOUN
4b29b566213	6	19	with	with	ADP
4b29b566213	6	20	impulse	impulse	NOUN
4b29b566213	6	21	and	and	CCONJ
4b29b566213	6	22	mass	mass	NOUN
4b29b566213	6	23	constraints	constraint	NOUN
4b29b566213	6	24	subject	subject	ADJ
4b29b566213	6	25	to	to	ADP
4b29b566213	6	26	pulse	pulse	ADJ
4b29b566213	6	27	loading	loading	NOUN
4b29b566213	6	28	.	.	PUNCT
4b29b566213	7	1	the	the	DET
4b29b566213	7	2	results	result	NOUN
4b29b566213	7	3	reinforce	reinforce	VERB
4b29b566213	7	4	the	the	DET
4b29b566213	7	5	concept	concept	NOUN
4b29b566213	7	6	of	of	ADP
4b29b566213	7	7	sandwich	sandwich	NOUN
4b29b566213	7	8	structures	structure	NOUN
4b29b566213	7	9	and	and	CCONJ
4b29b566213	7	10	show	show	VERB
4b29b566213	7	11	that	that	SCONJ
4b29b566213	7	12	two	two	NUM
4b29b566213	7	13	-	-	PUNCT
4b29b566213	7	14	layer	layer	NOUN
4b29b566213	7	15	systems	system	NOUN
4b29b566213	7	16	can	can	AUX
4b29b566213	7	17	achieve	achieve	VERB
4b29b566213	7	18	a	a	DET
4b29b566213	7	19	30	30	NUM
4b29b566213	7	20	%	%	NOUN
4b29b566213	7	21	reduction	reduction	NOUN
4b29b566213	7	22	in	in	ADP
4b29b566213	7	23	length	length	NOUN
4b29b566213	7	24	over	over	ADP
4b29b566213	7	25	single	single	ADJ
4b29b566213	7	26	layer	layer	NOUN
4b29b566213	7	27	ones	one	NOUN
4b29b566213	7	28	.	.	PUNCT
4b29b566213	8	1	next	next	ADV
4b29b566213	8	2	,	,	PUNCT
4b29b566213	8	3	a	a	DET
4b29b566213	8	4	rate	rate	NOUN
4b29b566213	8	5	-	-	PUNCT
4b29b566213	8	6	dependent	dependent	ADJ
4b29b566213	8	7	thermo	thermo	NOUN
4b29b566213	8	8	-	-	PUNCT
4b29b566213	8	9	mechanical	mechanical	ADJ
4b29b566213	8	10	model	model	NOUN
4b29b566213	8	11	is	be	AUX
4b29b566213	8	12	used	use	VERB
4b29b566213	8	13	to	to	PART
4b29b566213	8	14	incorporate	incorporate	VERB
4b29b566213	8	15	thermal	thermal	ADJ
4b29b566213	8	16	and	and	CCONJ
4b29b566213	8	17	viscoplastic	viscoplastic	ADJ
4b29b566213	8	18	effects	effect	NOUN
4b29b566213	8	19	;	;	PUNCT
4b29b566213	8	20	the	the	DET
4b29b566213	8	21	finite	finite	ADJ
4b29b566213	8	22	difference	difference	NOUN
4b29b566213	8	23	method	method	NOUN
4b29b566213	8	24	is	be	AUX
4b29b566213	8	25	used	use	VERB
4b29b566213	8	26	to	to	PART
4b29b566213	8	27	solve	solve	VERB
4b29b566213	8	28	this	this	DET
4b29b566213	8	29	model	model	NOUN
4b29b566213	8	30	.	.	PUNCT
4b29b566213	9	1	analysis	analysis	NOUN
4b29b566213	9	2	of	of	ADP
4b29b566213	9	3	1	1	NUM
4b29b566213	9	4	-	-	PUNCT
4b29b566213	9	5	layer	layer	NOUN
4b29b566213	9	6	systems	system	NOUN
4b29b566213	9	7	reveals	reveal	VERB
4b29b566213	9	8	a	a	DET
4b29b566213	9	9	viscoplastic	viscoplastic	ADJ
4b29b566213	9	10	stress	stress	NOUN
4b29b566213	9	11	spike	spike	NOUN
4b29b566213	9	12	on	on	ADP
4b29b566213	9	13	the	the	DET
4b29b566213	9	14	distal	distal	ADJ
4b29b566213	9	15	boundary	boundary	NOUN
4b29b566213	9	16	.	.	PUNCT
4b29b566213	10	1	additionally	additionally	ADV
4b29b566213	10	2	,	,	PUNCT
4b29b566213	10	3	experimentally	experimentally	ADV
4b29b566213	10	4	observed	observe	VERB
4b29b566213	10	5	stress	stress	NOUN
4b29b566213	10	6	amplification	amplification	NOUN
4b29b566213	10	7	is	be	AUX
4b29b566213	10	8	determined	determined	ADJ
4b29b566213	10	9	to	to	PART
4b29b566213	10	10	be	be	AUX
4b29b566213	10	11	a	a	DET
4b29b566213	10	12	function	function	NOUN
4b29b566213	10	13	of	of	ADP
4b29b566213	10	14	the	the	DET
4b29b566213	10	15	material	material	ADJ
4b29b566213	10	16	velocity	velocity	NOUN
4b29b566213	10	17	behind	behind	ADP
4b29b566213	10	18	the	the	DET
4b29b566213	10	19	incident	incident	NOUN
4b29b566213	10	20	shock	shock	NOUN
4b29b566213	10	21	in	in	ADP
4b29b566213	10	22	the	the	DET
4b29b566213	10	23	layer	layer	NOUN
4b29b566213	10	24	.	.	PUNCT
4b29b566213	11	1	the	the	DET
4b29b566213	11	2	amplification	amplification	NOUN
4b29b566213	11	3	amount	amount	NOUN
4b29b566213	11	4	is	be	AUX
4b29b566213	11	5	derived	derive	VERB
4b29b566213	11	6	analytically	analytically	ADV
4b29b566213	11	7	and	and	CCONJ
4b29b566213	11	8	matches	match	NOUN
4b29b566213	11	9	well	well	ADV
4b29b566213	11	10	with	with	ADP
4b29b566213	11	11	existing	exist	VERB
4b29b566213	11	12	models	model	NOUN
4b29b566213	11	13	.	.	PUNCT
4b29b566213	12	1	initial	initial	ADJ
4b29b566213	12	2	and	and	CCONJ
4b29b566213	12	3	boundary	boundary	ADJ
4b29b566213	12	4	condition	condition	NOUN
4b29b566213	12	5	studies	study	NOUN
4b29b566213	12	6	on	on	ADP
4b29b566213	12	7	the	the	DET
4b29b566213	12	8	one	one	NUM
4b29b566213	12	9	-	-	PUNCT
4b29b566213	12	10	dimensional	dimensional	ADJ
4b29b566213	12	11	multi	multi	ADJ
4b29b566213	12	12	-	-	ADJ
4b29b566213	12	13	layer	layer	ADJ
4b29b566213	12	14	cellular	cellular	ADJ
4b29b566213	12	15	systems	system	NOUN
4b29b566213	12	16	are	be	AUX
4b29b566213	12	17	conducted	conduct	VERB
4b29b566213	12	18	.	.	PUNCT
4b29b566213	13	1	the	the	DET
4b29b566213	13	2	results	result	NOUN
4b29b566213	13	3	indicate	indicate	VERB
4b29b566213	13	4	that	that	SCONJ
4b29b566213	13	5	pre	pre	ADJ
4b29b566213	13	6	-	-	VERB
4b29b566213	13	7	stressing	stressing	NOUN
4b29b566213	13	8	and	and	CCONJ
4b29b566213	13	9	convex	convex	ADJ
4b29b566213	13	10	density	density	NOUN
4b29b566213	13	11	arrangements	arrangement	NOUN
4b29b566213	13	12	reduce	reduce	VERB
4b29b566213	13	13	the	the	DET
4b29b566213	13	14	peak	peak	NOUN
4b29b566213	13	15	impulses	impulse	NOUN
4b29b566213	13	16	transferred	transfer	VERB
4b29b566213	13	17	through	through	ADP
4b29b566213	13	18	the	the	DET
4b29b566213	13	19	system	system	NOUN
4b29b566213	13	20	.	.	PUNCT
4b29b566213	14	1	increasing	increase	VERB
4b29b566213	14	2	temperature	temperature	NOUN
4b29b566213	14	3	is	be	AUX
4b29b566213	14	4	found	find	VERB
4b29b566213	14	5	to	to	PART
4b29b566213	14	6	increase	increase	VERB
4b29b566213	14	7	system	system	NOUN
4b29b566213	14	8	crush	crush	NOUN
4b29b566213	14	9	while	while	SCONJ
4b29b566213	14	10	reducing	reduce	VERB
4b29b566213	14	11	distal	distal	ADJ
4b29b566213	14	12	stress	stress	NOUN
4b29b566213	14	13	.	.	PUNCT
4b29b566213	15	1	further	far	ADV
4b29b566213	15	2	,	,	PUNCT
4b29b566213	15	3	load	load	VERB
4b29b566213	15	4	pulse	pulse	NOUN
4b29b566213	15	5	shape	shape	NOUN
4b29b566213	15	6	affects	affect	VERB
4b29b566213	15	7	the	the	DET
4b29b566213	15	8	shape	shape	NOUN
4b29b566213	15	9	of	of	ADP
4b29b566213	15	10	shocks	shock	NOUN
4b29b566213	15	11	and	and	CCONJ
4b29b566213	15	12	transmitted	transmit	VERB
4b29b566213	15	13	loads	load	NOUN
4b29b566213	15	14	.	.	PUNCT
4b29b566213	16	1	finally	finally	ADV
4b29b566213	16	2	,	,	PUNCT
4b29b566213	16	3	increasing	increase	VERB
4b29b566213	16	4	the	the	DET
4b29b566213	16	5	number	number	NOUN
4b29b566213	16	6	of	of	ADP
4b29b566213	16	7	layers	layer	NOUN
4b29b566213	16	8	in	in	ADP
4b29b566213	16	9	an	an	DET
4b29b566213	16	10	even	even	ADV
4b29b566213	16	11	length	length	ADJ
4b29b566213	16	12	distribution	distribution	NOUN
4b29b566213	16	13	will	will	AUX
4b29b566213	16	14	reduce	reduce	VERB
4b29b566213	16	15	the	the	DET
4b29b566213	16	16	performance	performance	NOUN
4b29b566213	16	17	of	of	ADP
4b29b566213	16	18	the	the	DET
4b29b566213	16	19	material	material	NOUN
4b29b566213	16	20	if	if	SCONJ
4b29b566213	16	21	the	the	DET
4b29b566213	16	22	same	same	ADJ
4b29b566213	16	23	linear	linear	ADJ
4b29b566213	16	24	density	density	NOUN
4b29b566213	16	25	gradient	gradient	NOUN
4b29b566213	16	26	is	be	AUX
4b29b566213	16	27	used	use	VERB
4b29b566213	16	28	.	.	PUNCT
4b29b566213	17	1	these	these	DET
4b29b566213	17	2	results	result	NOUN
4b29b566213	17	3	indicate	indicate	VERB
4b29b566213	17	4	a	a	DET
4b29b566213	17	5	significant	significant	ADJ
4b29b566213	17	6	leap	leap	NOUN
4b29b566213	17	7	in	in	ADP
4b29b566213	17	8	the	the	DET
4b29b566213	17	9	understanding	understanding	NOUN
4b29b566213	17	10	of	of	ADP
4b29b566213	17	11	multi	multi	ADJ
4b29b566213	17	12	-	-	ADJ
4b29b566213	17	13	layer	layer	ADJ
4b29b566213	17	14	cellular	cellular	ADJ
4b29b566213	17	15	materials	material	NOUN
4b29b566213	17	16	subject	subject	ADJ
4b29b566213	17	17	to	to	ADP
4b29b566213	17	18	pulse	pulse	ADJ
4b29b566213	17	19	loads	load	NOUN
4b29b566213	17	20	.	.	PUNCT