Parametric Study Of Low Velocity Impact Using Finite Element Analysis

Mohd Sahri, Mohd Ridhuan and Che Muhamad, Che Muhamad Khairul Iezuadi and Abd. Latif, Mohd Juzaila and Mahmud, Jamaluddin (2013) Parametric Study Of Low Velocity Impact Using Finite Element Analysis. Applied Mechanics and Materials, 393. pp. 397-402. ISSN 1660-9336

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An aircraft structural and material response is very complex when subjected to impact. It involves both elastic and plastic deformation in instant. Nevertheless, investigating this phenomenon is challenging yet interesting. Therefore, this research attempts to investigate the effect of selected parameters variation (i.e. material type, skin thickness and impact velocity) to the resulting equivalent plastic shear strain using finite element analysis (FEA). The finite element (FE) models were developed using commercially modeling and FE software to replicate an aircraft fuselage (target) and projectile according to the experimental setup and data established by other researcher [1]. The current study only focuses on the materials response and deformation behavior due low velocity (30 – 150 m/s) impact of a blunt object to a square shape target made of Al 2024T3 and aluminum alloy 7475 (AA 7475). In all cases (parameters variation), the resulting equivalent plastic strain has been determined and compared to the established data. It is found that the currents results are very close to the actual material response measured in experiments. This proves that simulated results are validated and the study contributed some knowledge to understanding the behaviour of the structural and material response in a low impact velocity. By varying selected parameters, the impact resistivity of the structure could be improved.

Item Type: Article
Uncontrolled Keywords: ANSYS, Explicit dynamic, Finite element analysis (FEA), Low velocity impact (LVI)
Divisions: Faculty of Mechanical Engineering > Department of Structure and Materials
Depositing User: M.J. Abd Latif
Date Deposited: 20 Feb 2014 08:58
Last Modified: 05 Jul 2021 11:58
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