Damage characteristics in laminated composite structures subjected to low-velocity impact
International Journal of Structural Integrity
ISSN: 1757-9864
Article publication date: 4 September 2019
Issue publication date: 26 August 2020
Abstract
Purpose
The present study deals with the numerical modeling of the low-velocity impact damage of laminated composites which have increasingly important applications in aerospace primary structures. Such damage, generated by various sources during ground handling, substantially reduces the mechanical residual performance and the safe-service life. The purpose of this paper is to present and validate a computationally efficient approach in order to explore the effect of critical parameters on the impact damage characteristics.
Design/methodology/approach
Numerical modeling is considered as one of the most efficient tool as compared to the expensive and time-consuming experimental testing. In this paper, a finite element model based on explicit dynamics formulations is adopted. Hashin criterion is applied to predict the intralaminar damage initiation and evolution. The numerical analysis is performed using the ABAQUS® programme.
Findings
The employed modeling approach is validated using corresponding numerical data found in the literature and the presented results show a reasonable correlation to the available literature data. It is demonstrated that the current model can be used to capture the force-time response as well as damage parameter maps showing the intralaminar damage evolution for different impact cases with respect to the physical boundary conditions and a range of impact energies.
Originality/value
Low-velocity impact damage of laminated composites is still not well understood due to the complexity and non-linearity of the damage zone. The presented model is used to predict the force-time response which is considered as one of the most important parameters influencing the structural integrity. Furthermore, it is used for capturing the damage shape evolution, exhibiting a high degree of capability as a damage assessment computational tool.
Keywords
Citation
Stamoulis, K., Georgantzinos, S.K. and Giannopoulos, G.I. (2020), "Damage characteristics in laminated composite structures subjected to low-velocity impact", International Journal of Structural Integrity, Vol. 11 No. 5, pp. 670-685. https://doi.org/10.1108/IJSI-10-2018-0063
Publisher
:Emerald Publishing Limited
Copyright © 2019, Emerald Publishing Limited