Large plastic deformation in plane structures: analysis of finned surfaces under in-plane dynamic loads

An analytical model is presented for characterizing finned surfaces as energy absorbing devices for the protection of nuclear components; in particular large irradiated fuel transport packages. The results obtained are compared with the data obtained in a comprehensive experimental programme carried out on stainless steel fin sections and with the results of numerical calculation performed with the MARC code. The comparison indicated the capability of the model to supply useful data, especially from a practical point of view, for the design of the structure under study.