Investigation on the effect of interface properties on compressive failure behavior of 3D woven composites through micromechanics-based multiscale damage model

Investigation on the effect of interface properties on compressive failure behavior of 3D woven composites through micromechanics-based multiscale damage model

Zheng, T. (TU Delft Structural Integrity & Composites; Harbin Institute of Technology)
Guo, Licheng (Harbin Institute of Technology)
Sun, Ruijian (Beijing Institute of Astronautical Systems Engineering, Beijing)
Wang, Tongtong (Harbin Institute of Technology)
Hong, Changqing (Harbin Institute of Technology)
Benedictus, R. (TU Delft Structural Integrity & Composites)
Pascoe, J.A. (TU Delft Structural Integrity & Composites)

2023

In this paper, the effect of interface properties on the compressive failure behavior of 3D woven composites (3DWC) is investigated by incorporating a micromechanics-based multiscale damage model (MMDM). The correlation between the mesoscopic stress of yarns and microscopic stress of constituents is established by defining a stress amplification factor. With the microscopic stresses, the fiber breakage and matrix failure can be separately evaluated at the microscale, without assuming the yarns as transversely isotropic homogeneous materials. Especially, the interfacial debonding between yarns and matrix is also a dominant damage mode within 3DWC. Given that there is still a lack of studies on the influence of interfacial properties on the compressive failure behavior of 3DWC, it is meaningful to perform numerical parametric studies to reveal how the interface properties contribute to the damage mechanisms of 3DWC under compressions. The predicted results indicate that with the increase of interface strengths and fracture toughness, the compressive resistance of 3DWC can be significantly improved, resulting in higher strength and failure strain. Additionally, the studied 3DWCs with weak, medium and strong interfaces exhibit different damage development processes.

3D woven composites
Compressive failure behavior
Interface
Micromechanics-based multiscale damage model
Numerical parametric study

http://resolver.tudelft.nl/uuid:cd05702e-a4ec-437b-981c-cd69042679a3

https://doi.org/10.1016/j.compstruct.2023.117186

2023-11-29

0263-8223

Composite Structures, 320

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

journal article

© 2023 T. Zheng, Licheng Guo, Ruijian Sun, Tongtong Wang, Changqing Hong, R. Benedictus, J.A. Pascoe