ELASTIC-PLASTIC DYNAMIC RESPONSE OF FULLY BACKED SANDWICH PLATES UNDER LOCALIZED IMPULSIVE LOADING |
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| Authors: | Hua Liu Wuchao Chen Jialing Yang |
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| Affiliation: | The Solid Mechanics Research Center, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | An analytical model is developed to assess the elastic-plastic dynamic response of fully backed sandwich plates under localized impulse load.The core is modeled as an elasticperfectly plastic foundation.The top face sheet is treated as an individual plate resting on the foundation.The elastic-plastic analysis for the top face sheet is based on a minimum principle in dynamic plasticity associated with the finite difference technique.The effects of spatial and temporal distributions of the impulsive loading on the dynamic response of sandwich plates are discussed.The model can be used to predict the impulse-induced local effect on fully backed sandwich plates. |
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| Keywords: | sandwich plate elastic plastic localized impulse plastic dissipation |
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