Positive and negative feedback of entangled lightning multiphysics on composites

IF 9.4 1区 工程技术 Q1 ENGINEERING, MECHANICAL International Journal of Mechanical Sciences Pub Date : 2025-03-15 Epub Date: 2025-03-08 DOI:10.1016/j.ijmecsci.2025.110022
Yue Wu , Fusheng Wang , Chenyang Lv , Jinru Sun , Xiangteng Ma , Chenguang Huang , Zhiqiang Fan , Shaozhen Wang , Chenglin Wang , Yunpeng Gao , Zemin Duan , Xueling Yao
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Abstract

Lightning strike will have intertwined multi-physical effects on carbon fiber reinforced polymer. According to experiments and high-fidelity simulations in this study, distinctive positive and negative feedback is originally identified between the entangled lightning effects in composites damage driving. The intricate mesoscopic feedback mechanisms are groundbreakingly revealed through the anisotropic equivalent circuit. Positive feedback exists between ablation and mechanical effects, while thermal strain is counteracted by overpressure and ampere force effects. These feedback relationships are formed due to dissimilar action mechanisms and energy transformations, which dynamically change with time and location. They jointly cause complex non-uniform damage to composites.

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复合材料上纠缠闪电多物理场的正负反馈
雷击会对碳纤维增强聚合物产生交织的多物理效应。本研究通过实验和高保真仿真,初步确定了复合材料损伤驱动中纠缠闪电效应之间存在明显的正负反馈。通过各向异性等效电路,开创性地揭示了复杂的介观反馈机制。烧蚀和机械效应之间存在正反馈,而热应变被超压和安培力效应抵消。这些反馈关系是由于不同的作用机制和能量转换而形成的,并随着时间和地点的变化而动态变化。它们共同对复合材料造成复杂的非均匀损伤。
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来源期刊
International Journal of Mechanical Sciences
International Journal of Mechanical Sciences 工程技术-工程:机械
CiteScore
12.80
自引率
17.80%
发文量
769
审稿时长
19 days
期刊介绍: The International Journal of Mechanical Sciences (IJMS) serves as a global platform for the publication and dissemination of original research that contributes to a deeper scientific understanding of the fundamental disciplines within mechanical, civil, and material engineering. The primary focus of IJMS is to showcase innovative and ground-breaking work that utilizes analytical and computational modeling techniques, such as Finite Element Method (FEM), Boundary Element Method (BEM), and mesh-free methods, among others. These modeling methods are applied to diverse fields including rigid-body mechanics (e.g., dynamics, vibration, stability), structural mechanics, metal forming, advanced materials (e.g., metals, composites, cellular, smart) behavior and applications, impact mechanics, strain localization, and other nonlinear effects (e.g., large deflections, plasticity, fracture). Additionally, IJMS covers the realms of fluid mechanics (both external and internal flows), tribology, thermodynamics, and materials processing. These subjects collectively form the core of the journal's content. In summary, IJMS provides a prestigious platform for researchers to present their original contributions, shedding light on analytical and computational modeling methods in various areas of mechanical engineering, as well as exploring the behavior and application of advanced materials, fluid mechanics, thermodynamics, and materials processing.
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