Koerber, Hannes
[Verfasser:in];
Kuhn, Peter
[Verfasser:in];
Ploeckl, Marina
[Verfasser:in];
Otero, Fermin
[Verfasser:in];
Gerbaud, Paul-William
[Verfasser:in];
Rolfes, Raimund
[Verfasser:in];
Camanho, Pedro P.
[Verfasser:in]
Experimental characterization and constitutive modeling of the non-linear stress–strain behavior of unidirectional carbon–epoxy under high strain rate loading
- [published Version]
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E-Artikel
Titel:
Experimental characterization and constitutive modeling of the non-linear stress–strain behavior of unidirectional carbon–epoxy under high strain rate loading
Beteiligte:
Koerber, Hannes
[Verfasser:in];
Kuhn, Peter
[Verfasser:in];
Ploeckl, Marina
[Verfasser:in];
Otero, Fermin
[Verfasser:in];
Gerbaud, Paul-William
[Verfasser:in];
Rolfes, Raimund
[Verfasser:in];
Camanho, Pedro P.
[Verfasser:in]
Erschienen:
Heidelberg : Springer Verlag, 2018
Erschienen in:Advanced Modeling and Simulation in Engineering Sciences 5 (2018), Nr. 1
Anmerkungen:
Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
Beschreibung:
The mechanical response of IM7-8552 carbon epoxy was investigated for transverse tension and transverse tension/in-plane shear loadings at static and dynamic strain rates using transverse tension and off-axis tension specimens. The dynamic tests were carried out on a split-Hopkinson tension bar at axial strain rates from 113 to 300 s - 1. With the already available off-axis and transverse compression test data for IM7-8552, a comprehensive data set is available now, which can be used for validation and calibration of numerical models. The measured axial stress–strain response was simulated using a fully 3D transversely isotropic elastic–viscoplastic constitutive model. The constitutive model represents a viscoplastic extension of the transversely-isotropic plasticity model developed by the authors (Vogler et al. in Mech Mater 59:50–64, 2013). An invariant based failure criterion is added to the model to be able to predict the strength for a given orientation and strain rate accurately. The strain rate dependency of the elastic and ultimate strength properties is introduced in the model through scaling functions. A good correlation between the measured and numerically predicted stress–strain response and failure of the specimens was achieved for all specimen types and both strain rate regimes.