Abstract
The topic of structural impact is concerned with the response of structures subjected to dynamic loadings producing large inelastic strains and permanent deformations. This is relevant to safety calculations and energy absorption estimates for structural crashworthiness studies. The rigid-plastic method of analysis is introduced and used to examine the dynamic plastic response of a fully clamped beam struck by a rigid mass travelling with an initial impact velocity. This theoretical solution is used to assess the accuracy and range of validity of a quasi-static method of analysis which is often employed to simplify impact problems in the structural crashworthiness field. The dynamic axial crushing behaviour and energy absorbing capacity of a thin-walled tube is examined briefly. Also reported are the results of some recent studies on the influence of axial length on the response modes of various thin-walled sections subjected to axial impact loads. The chapter concludes with some brief comments on the large strain properties of materials under dynamic loads, the scaling of structures subjected to large impact loads and the dynamic inelastic failure of structures.
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Jones, N. (1997). Dynamic Inelastic Structural Response. In: Ambrósio, J.A.C., Pereira, M.F.O.S., da Silva, F.P. (eds) Crashworthiness of Transportation Systems: Structural Impact and Occupant Protection. NATO ASI Series, vol 332. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5796-4_12
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DOI: https://doi.org/10.1007/978-94-011-5796-4_12
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