Chapter
Apr 26, 2012
Explicit Finite Element Analysis of 2024-T3/T351 Aluminum Material under Impact Loading for Airplane Engine Containment and Fragment Shielding
Publication: Earth & Space 2008: Engineering, Science, Construction, and Operations in Challenging Environments
Abstract
Uncontained aircraft engine failure can cause catastrophic damaging effects to aircraft systems if not addressed in the aircraft design. Mitigating the damaging effects of uncontained engine failure and improving the numerical modeling capability of these uncontained engine events are crucial. In this paper, high strain rate material behavior of one of the most extensively used materials in the aircraft industry is simulated and compared against ballistic impact tests. Ballistic limits are evaluated by utilizing explicit Finite Element (FE) simulations based on the corresponding ballistic impact experiments. LS-DYNA is used as a non-linear explicit dynamics FE code for the simulations. Johnson-Cook material model is employed as a thermo visco-plastic material model coupled with a non-linear equation-of-state and an accumulated damage evaluation algorithm for the numerical simulations. Predictive performance of the numerical models is discussed in terms of the material characterization efforts, material model parameter sensitivities and mesh sensitivities.
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© 2008 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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FHWA/NHTSA National Crash Analysis Center, George Washington University. E-mail: [email protected]
Steve Kan
FHWA/NHTSA National Crash Analysis Center, George Washington University
Matti J. Loikkanen
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