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Computational Analysis of Compressed Stiffened Composite Panels with Impact Damage

1
Sarov Engineering Center, Nizhny Novgorod Region, Techno-Park «Sarov» 607328, Russia
2
Moscow Aviation Institute, National Research University, Moscow 125993, Russia
3
Joint-Stock Company, Aero Composite, Moscow 125284, Russia
*
Author to whom correspondence should be addressed.
Aerospace 2019, 6(3), 25; https://doi.org/10.3390/aerospace6030025
Received: 15 November 2018 / Revised: 9 February 2019 / Accepted: 15 February 2019 / Published: 27 February 2019
(This article belongs to the Special Issue Structural Stability of Aerospace Structures)
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Abstract

A complex modeling technique is presented in this paper for a numerical analysis of compressed stiffened composite panels with impact damage. The numerical technique is based on the LS-Dyna code application, which simulates both the dynamic deformation of the panel subjected to a local impact and the quasi-static uniform compression of the panel within the local damage zone. The technique has been validated by both impact and compression experimental tests of the stiffened composite panel. The obtained numerical results show that impact damage to the composite panel can reduce the carrying capacity in more than 50% of damaged panels compared to undamaged panels. View Full-Text
Keywords: composite stiffened panels; stresses; strains; kinetic energy; carrying capacity; dynamic loading; impact damage; static compression; finite element method; explicit scheme composite stiffened panels; stresses; strains; kinetic energy; carrying capacity; dynamic loading; impact damage; static compression; finite element method; explicit scheme
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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MDPI and ACS Style

Ryabov, A.A.; Maslov, E.E.; Strelets, D.Y.; Slobodchikov, V.G. Computational Analysis of Compressed Stiffened Composite Panels with Impact Damage. Aerospace 2019, 6, 25.

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