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Multiscale progressive failure analysis of textile composites

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

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  • Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) Standort Braunschweig

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OriginalspracheEnglisch
Seiten (von - bis)61-72
Seitenumfang12
FachzeitschriftComposites Science and Technology
Jahrgang70
Ausgabenummer1
PublikationsstatusVeröffentlicht - 17 Sept. 2009

Abstract

The experimental determination of stiffness and strength of textile composites is expensive and time-consuming. Experimental tests are only capable of delivering properties of a whole textile layer, because a decomposition is not possible. However, a textile layer, consisting of several fiber directions, has the drawback that it is likely to exhibit anisotropic material behavior. In the presented paper a finite element multiscale analysis is proposed that is able to predict material behavior of textile composites via virtual tests, solely from the (nonlinear) material behavior of epoxy resin and glass fibers, as well as the textile fiber architecture. With these virtual tests it is possible to make predictions for a single layer within a textile preform or for multiple textile layers at once. The nonlinear and pressure-dependent behavior of the materials covered in the multiscale analysis is modeled with novel material models developed for this purpose. In order to avoid mesh-dependent solutions in the finite-element simulations, regularization techniques are applied. The simulations are compared to experimental test results.

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Multiscale progressive failure analysis of textile composites. / Ernst, Gerald; Vogler, Matthias; Hühne, Christian et al.
in: Composites Science and Technology, Jahrgang 70, Nr. 1, 17.09.2009, S. 61-72.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Ernst G, Vogler M, Hühne C, Rolfes R. Multiscale progressive failure analysis of textile composites. Composites Science and Technology. 2009 Sep 17;70(1):61-72. doi: 10.1016/j.compscitech.2009.09.006
Ernst, Gerald ; Vogler, Matthias ; Hühne, Christian et al. / Multiscale progressive failure analysis of textile composites. in: Composites Science and Technology. 2009 ; Jahrgang 70, Nr. 1. S. 61-72.
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abstract = "The experimental determination of stiffness and strength of textile composites is expensive and time-consuming. Experimental tests are only capable of delivering properties of a whole textile layer, because a decomposition is not possible. However, a textile layer, consisting of several fiber directions, has the drawback that it is likely to exhibit anisotropic material behavior. In the presented paper a finite element multiscale analysis is proposed that is able to predict material behavior of textile composites via virtual tests, solely from the (nonlinear) material behavior of epoxy resin and glass fibers, as well as the textile fiber architecture. With these virtual tests it is possible to make predictions for a single layer within a textile preform or for multiple textile layers at once. The nonlinear and pressure-dependent behavior of the materials covered in the multiscale analysis is modeled with novel material models developed for this purpose. In order to avoid mesh-dependent solutions in the finite-element simulations, regularization techniques are applied. The simulations are compared to experimental test results.",
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note = "Funding information: Part of this work was funded by the German Research Council (DFG). This support within the framework of SPP-1123 “Textile composite design and manufacturing technologies for lightweight structures in mechanical and vehicle engineering” is gratefully acknowledged. The excellent cooperation with DLR Braunschweig was very much appreciated.",
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