Document Type
Article
Journal/Book Title/Conference
International Journal of Solids and Structures
Volume
305
Publisher
Elsevier Ltd
Publication Date
10-5-2024
Journal Article Version
Accepted Manuscript
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial 4.0 License
First Page
1
Last Page
53
Abstract
In this study, lightning strike damage of woven carbon fibre-reinforced polymer laminates (W-CFRPs) and woven composite honeycomb sandwich panels (W-CHSPs) are simulated using the proposed sequential thermal-electrical-mechanical finite element (FE) coupling model incorporating dielectric breakdown of materials. Surface current with an amplitude of 200 kA and corresponding lightning shockwave overpressure were applied on each composite. The FE model coupled with LaRC05 criterion was used to study the failure behaviours of intralaminar damage and interlaminar delamination of the W-CFRPs and W-CHSPs. A series of lightning strike tests were performed to validate the FE model. Detailed lightning damage assessments and mechanisms were characterized by a combination of visual inspection, image processing, ultrasonic scanning and micro computed tomography (Micro-CT) and showed good agreements with the FE-predicted results. It can be concluded that shockwave overpressure significantly impacts lightning-induced damages, thereby supporting the effectiveness of the newly proposed sequential thermal-electrical-mechanical coupling model, which demonstrates improved predictive accuracy.
Recommended Citation
Yang, Bin, Lee, Juhyeong, Zhou, Yuchen, Liu, Xiaoshan, Soares, C. Guedes, Fu, Kunkun, and Yang, Dongmin, "Coupled Thermal-Electrical-Mechanical Characteristics of Lightning Damage in Woven Composite Honeycomb Sandwich Structures" International Journal of Solids and Structures, Vol. 305, pp. 1-54. https://doi.org/10.1016/j.ijsolstr.2024.113090
