Modelling of Spall in an Anisotropic Aluminium Alloy |
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| Authors: | de Vuyst Tom Vignjevic Rade Bourne Neil K Campbell James |
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| Institution: | (1) Structures and Materials Group, College of Aeronautics, Cranfield University, Cranfield, BEDS, MK43 0AL, UK;(2) Structures and Materials Group, College of Aeronautics, Cranfield University, Cranfield, BEDS, MK43 0AL, UK;(3) Royal Military College of Science, Cranfield University, Shrivenham, Swindon, SN6 8LA, UK |
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| Abstract: | Spall caused by hypervelocity impacts at the lower range of velocities could result in significant damage to spacecraft. A number of polycrystalline alloys, used in spacecraft manufacturing, exhibit a pronounced anisotropy in their mechanical properties. The aluminium alloy AA 7010, whose orthotropy is a consequence of the meso-scale phase distribution or grain morphology, has been chosen for this investigation. The material failure observed in plate impact was simulated using a number of spall models. The Hugoniot elastic limit and spall strength have been studied as a function of orientation, and compared to experimental results. |
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| Keywords: | failure criteria high velocity impacts non-linear finite elements space debris spall |
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