This report describes a preliminary structural analysis of 2 complete fuselages, both belonging to the jet airliner category and differing for passenger capacity: 100 and 350 passengers respectively; the analysis is done for a set of loading conditions considered relevant for the aircraft category, and is aimed to provide data for material selection for different areas of the fuselage.@en

One of the main aspects of crashworthiness is energy absorption: a high energy absorption, associated to internal cabin integrity, brings to considerable reduction of load transmission to the cabin, seat tracks and cabin hat racks, and then a reduction of accelerations and deformations. Structural accelerations are directly linked to the injury criteria generally accepted in crashworthiness, because most of human body injuries are generated by local accelerations (head, chest, pelvis) and dynamic loading (lumbar spine, fenur); structural deformations bring to seat failure and hat rack ruptures: in the first case the unrestrained occupants are exposed to high risk of impacts; in the second case the consequent fall of objects increases the risk of injuries to occupants.@en