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Evaluation of manufacturing deviations of composite materials

Willberg, Christian and Heinecke, Falk (2020) Evaluation of manufacturing deviations of composite materials. Proceedings in Applied Mathematics and Mechanics, 20 (1). Wiley. doi: 10.1002/pamm.202000345. ISSN 1617-7061.

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Official URL: https://onlinelibrary.wiley.com/doi/10.1002/pamm.202000345


Manufacturing induced imperfections in composites lead to a reduction in the performance of the structure. In order to carry out repairs only when they are really necessary, evaluation capabilities to determine the strength reduction are required. Two methods of evaluation are presented: a finite element based and a Peridynamic based approach, respectively. The finite element based process is used to evaluate stiffness and strength reduction. This processes currently doesn't include progressive failure analysis. Hence, the peridynamics process serves among other things to verify the prediction by the finite element model. Because, the correspondence formulation is used, integral Cauchy stresses are obtained for the laminate and can be verified. Progressive failure analysis is then used to evaluate whether the first ply failure approach used in the finite element model is accurate enough to ensure strength reduction values.

Item URL in elib:https://elib.dlr.de/137113/
Document Type:Article
Title:Evaluation of manufacturing deviations of composite materials
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Willberg, ChristianChristian.Willberg (at) dlr.dehttps://orcid.org/0000-0003-2433-9183
Heinecke, Falkfalk.heinecke (at) dlr.dehttps://orcid.org/0000-0002-9299-4078
Journal or Publication Title:Proceedings in Applied Mathematics and Mechanics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1002/pamm.202000345
Keywords:Peridynamics, manufacturing, damages
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Wind Energy
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Wind Energy (old), L - Simulation and Validation (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Willberg, Dr.-Ing. Christian
Deposited On:08 Feb 2021 08:59
Last Modified:22 Mar 2021 10:28

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