id	keyword
fis-1811	beam
fis-1811	concrete
fis-1811	crack
fis-1811	eigenfrequencies
fis-1811	vibration
fis-1811	loading
fis-1811	changes
fis-1811	bending
fis-1811	structures
fis-1811	shardakov
fis-1811	doi
fis-1811	methods
fis-1811	fig