Lightning damage analysis of composite bolted joint structures based on thermal-electrical-structural simulation

Yuchen Zhu, Yuan Li, Jinru Sun, Chuang Liu, Xiangjie Xu, Kaifu Zhang, Hui Cheng

科研成果: 期刊稿件文章同行评审

5 引用 (Scopus)

摘要

To analyze the impact of connection behavior on lightning-induced ablation damage in composite bolted joints, this paper analyzes contact properties based on thermoelectric characteristics and develops a lightning ablation damage model for composite interference joint structures. A preliminary analysis of the electrothermal conduction process in the interference-fit composite joints clarifies the influence of connection behavior on lightning damage. The results indicate that a skin effect occurs near the fastener-to-CFRP interface, and both Joule heating and conductive heat significantly affect the temperature distribution in the composite bolted joint structure. A lightning current impact test was also conducted for validation and comparison. Quantitative comparisons show that the predicted in-plane damage aligns well with the experimental results, with an error of 7.37%, while the difference in thickness direction damage is more significant, with an error of 40.02%. Furthermore, the analysis of ablation damage characteristics reveals that the most severe damage occurs in the lower-middle region of the CFRP thickness due to the combined effects of interference damage and bolt preload, while damage in other areas is suppressed.

源语言英语
文章编号118720
期刊Composite Structures
352
DOI
出版状态已出版 - 15 1月 2025

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