Hypervelocity impact on honeycomb target structures: Experiments and modeling |
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Authors: | J-M Sibeaud L Thamié C Puillet |
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Affiliation: | 1. Centre d''Etudes de Gramat, BP 80200, F-46500 Gramat, France;2. Altran Sud-Ouest, BP 27504, 31675 Labège, France;3. Centre National d''Etudes Spatiales, 18, avenue Edouard Belin, F-31034 Toulouse Cedex, France |
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Abstract: | This paper reviews some experimental and modeling works carried out at the CEG on hypervelocity ballistic properties of honeycomb structures representative of satellites structural bodies. Honeycomb structural panels were considered for HVI experiments using CEG's Persephone two-stage light gas gun in order to provide reference data to assess the Ouranos simulation software that was then used intensively during the second phase of the study. A ballistic limit equation (BLE) derived from Christiansen's equation was fitted for projectile velocities ranging from 2 to 10 km/s under normal and oblique impacts. In case of perforation, when the projectile diameter is greater than the critical perforation diameter, particle clouds orientation and amplitude in the plane of impact have been characterised and modeled analytically for inclusion within a global vulnerability software. |
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Keywords: | Honeycomb sandwich panel Debris cloud Hydrocode simulation Ballistic limit equation Analytical modeling |
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