Details
| Original language | English |
|---|---|
| Publication status | Published - 2015 |
| Event | 20th International Conference on Composite Materials, ICCM 2015 - Copenhagen, Denmark Duration: 19 Jul 2015 → 24 Jul 2015 |
Conference
| Conference | 20th International Conference on Composite Materials, ICCM 2015 |
|---|---|
| Country/Territory | Denmark |
| City | Copenhagen |
| Period | 19 Jul 2015 → 24 Jul 2015 |
Abstract
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 113s-1 to 300s-1. With the already available off-axis and transverse compression test data for IM7-8552 presented in [1], 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 presented in [2]. A generally quite good correlation between the measured and numerically predicted stress-strain response was achieved for all specimen types and both strain rate regimes. However, the results show the necessity to regard viscous effects in the elastic regime as well.
Keywords
- Carbon-epoxy, Composites, Constitutive modeling, Strain rate effects, Viscoplasticity
ASJC Scopus subject areas
- Engineering(all)
- General Engineering
- Materials Science(all)
- Ceramics and Composites
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2015. Paper presented at 20th International Conference on Composite Materials, ICCM 2015, Copenhagen, Denmark.
Research output: Contribution to conference › Paper › Research › peer review
}
TY - CONF
T1 - Constitutive modeling and experimental characterization of the non-linear stress-strain behavior of unidirectional carbon-epoxy under high strain rates
AU - Vogler, Matthias
AU - Koerber, Hannes
AU - Kuhn, Peter
AU - Rolfes, Raimund
AU - Camanho, Pedro
N1 - Publisher Copyright: © 2015 International Committee on Composite Materials. All rights reserved. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2015
Y1 - 2015
N2 - 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 113s-1 to 300s-1. With the already available off-axis and transverse compression test data for IM7-8552 presented in [1], 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 presented in [2]. A generally quite good correlation between the measured and numerically predicted stress-strain response was achieved for all specimen types and both strain rate regimes. However, the results show the necessity to regard viscous effects in the elastic regime as well.
AB - 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 113s-1 to 300s-1. With the already available off-axis and transverse compression test data for IM7-8552 presented in [1], 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 presented in [2]. A generally quite good correlation between the measured and numerically predicted stress-strain response was achieved for all specimen types and both strain rate regimes. However, the results show the necessity to regard viscous effects in the elastic regime as well.
KW - Carbon-epoxy
KW - Composites
KW - Constitutive modeling
KW - Strain rate effects
KW - Viscoplasticity
UR - http://www.scopus.com/inward/record.url?scp=85053110592&partnerID=8YFLogxK
M3 - Paper
T2 - 20th International Conference on Composite Materials, ICCM 2015
Y2 - 19 July 2015 through 24 July 2015
ER -