https://www.youtube.com/watch?v=Le-ksimMkJ4Ever seen those water-filled barrels in front of freeway overpasses? Rupture and blow the water out of one and you've expelled more energy before you hit a non-yielding object like a Jersey barrier or the bridge abutments than you would destroying the barrel itself. Same principle although it in theory would impart more load on the fuselage at initial contact in an aircraft crash.
=classic,STATIC energy absorber...
-and DYNAMIC absorber,s=0.15 m