id	keyword
dss-270	projectile
dss-270	steel
dss-270	velocity
dss-270	target
dss-270	material
dss-270	penetration
dss-270	model
dss-270	impact
dss-270	numerical
dss-270	figure
dss-270	strength
dss-270	vol
dss-270	simulation
dss-270	hardness
dss-270	exit