An overview of major aspects of the aircraft impact problem

Abstract This paper identifies the major aspects of the aircraft impact problem and spotlights the most relevant topics for future investigations. The emphasis is on three main topics: modeling techniques, influence of non-linear behavior, and importance of damping in the dynamic structural response analyses for aircraft impact loading. Results are presented from brief studies involving response of linear and nonlinear simple systems to short-duration impulsive loadings of the aircraft impact type. For linear elastic cases, the transient and free vibration components are studied separately for systems with different natural periods. The influence of damping on floor response spectra is also studied both in the form of peak values as well as the corresponding frequency shifts. For nonlinear systems, ranges of required ductility ratios for a typical aircraft impact loading are compared against available ductility ratios for typical wall and slab panels. An extensive literature survey is carried out on several major topics pertinent to the aircraft impact problem, encompassing various disciplines of engineering. Results and discussions on the basis of this literature survey are presented for major topics.

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