SIMULATION OF STRUCTURAL INTEGRITY

摘要

Current aircraft structural integrity (ASI) management programs are based predominately on thernknowledge and experience associated with metallic aircraft structures. Since the 1960s, thernpercentage of aircraft structures being manufactured from composite materials is steadilyrnincreasing. Latest generation of commercial aircraft structures are composed of approximatelyrn50 % composites by weight and several new military airframes comprise of more than 75 %rnairframe weight (Aerospatiale Tiger and NH-90 helicopters). This raises the question: Arerncurrent structural integrity management programs appropriate for composite aircraft structures?rnTo assist in answering this question, the Structural Integrity Causation Failure Model (SICFM)rnand simulation (SICFMsim) is being developed to assist in the identification of areas of potentialrnweakness in current structural integrity management regulations in regard to composite aircraftrnstructures. The SIFCMsim achieves this by providing a means of performing experimentationrnwith structural integrity methodologies with different structural materials at a holistic level, asrnopposed to the detailed design level. This paper provides an introduction to SICFMsim andrnareas of future development.