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An analytical scaling approach for low-velocity impact on composite structures

Bogenfeld, Raffael Marius and Kreikemeier, Janko and Wille, Tobias (2018) An analytical scaling approach for low-velocity impact on composite structures. Composite Structures, pp. 71-84. Elsevier. doi: 10.1016/j.compstruct.2017.12.012. ISSN 0263-8223.

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For the analysis of low-velocity impact, this work provides an analytic scaling approach, permitting to analyze structural impact scenarios on a small reference coupon. Thus, the numerical prediction of impact damage on large structures through high-fidelity methods is made possible. Yet, the massive computational effort needed for these virtual tests even on a coupon level means a major challenge to their application in the design process of a structure. To reduce the computational effort, local analysis approaches consider only damage-prone areas for an actual damage analysis. Our approach permits the analysis of structural impact scenarios on a much smaller reference coupon that represents the damage-prone area. An analytical spring-mass model transfers the impact parameters between the structural and the coupon level. For this purpose, the spring-mass model captures the impact-damage state by a scalar parameter. The transfer between the reference coupon and the structure is based on the equivalence of this damage parameter. Thus, a coupon simulation or coupon test result is given validity for a structural impact scenario. So, based on a single coupon simulation, areal impact assessment of a structure is made possible. This methodology is validated through experiments and a demonstrated on a generic aircraft door structure.

Item URL in elib:https://elib.dlr.de/117871/
Document Type:Article
Title:An analytical scaling approach for low-velocity impact on composite structures
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Bogenfeld, Raffael MariusRaffael.Bogenfeld (at) dlr.dehttps://orcid.org/0000-0003-3883-269X
Kreikemeier, Jankojanko.kreikemeier (at) dlr.deUNSPECIFIED
Wille, Tobiastobias.wille (at) dlr.deUNSPECIFIED
Date:1 March 2018
Journal or Publication Title:Composite Structures
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.compstruct.2017.12.012
Page Range:pp. 71-84
EditorsEmailEditor's ORCID iD
Keywords:Impact analysis; Low-velocity impact; Analytical methods; Damage simulation; Structural impact; Delamination; Schlagschaden
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation (old), L - Structures and Materials (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Bogenfeld, Raffael Marius
Deposited On:29 Jan 2018 07:05
Last Modified:29 Jan 2018 07:05

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