Failure mechanisms of asymmetric sandwich panels subjected to low-velocity impact: An explicit wave dominating damage model

Asymmetric sandwich panels (ASPs) with tapered transitions are effective configurations for connecting them with other structural elements. However, fiber reinforced composite panels are susceptible to impact events and thus it is imperative to gain a comprehensive understanding of the impact failur...

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Bibliographic Details
Published in:Mechanics of advanced materials and structures 2024-12, Vol.31 (28), p.10128-10142
Main Authors: Wu, Dake, Xiong, Xinfa, Yu, Zhangjie, Peng, Ang, Deng, Jian, Zhou, Guangming, Wang, Xinwei
Format: Article
Language:English
Subjects:
Asymmetric sandwich panels
Asymmetry
Damage assessment
Energy levels
failure mechanism
Failure mechanisms
Fiber composites
finite element analysis
glass fibers
impact
Impact damage
Impact response
Impact tests
Sandwich panels
Stacking sequence (composite materials)
Structural members
Thickness
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Summary:Asymmetric sandwich panels (ASPs) with tapered transitions are effective configurations for connecting them with other structural elements. However, fiber reinforced composite panels are susceptible to impact events and thus it is imperative to gain a comprehensive understanding of the impact failure mechanisms of ASPs. This article investigates the failure mechanisms of ASPs subjected to low-velocity impacts experimentally and numerically. Low-velocity impact tests are conducted at two energy levels to induce barely visible impact damage (BVID) and visible impact damage (VID). A non-linear finite element (FE) model is developed to elucidate the damage behavior and failure mechanisms of ASPs. The numerical results are compared with experimental data to validate the FE model. Additionally, a parametric study is undertaken to explore the failure mechanisms of ASPs subjected to penetration. This study also investigates the influence of impactor diameter, impactor angle, foam core thickness, face sheet stacking sequence, and face sheet thickness on impact response through numerical simulations. The reported results hold potential significance for safety design ASPs.
ISSN:1537-6494
1537-6532
DOI:10.1080/15376494.2023.2285410