High-velocity impact response of shear thickening fluid-filled sandwich lattice panels

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-03-25 DOI:10.1016/j.compositesb.2025.112449

Z.P. Gu , J.Z. Yue , C.G. Huang , X.Q. Wu

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Abstract

This study investigates the impact response of sandwich panels with lattice truss cores (SPLTC), filled with shear-thickening fluids (STF), under various impact velocities using fluid-structure interaction (FSI) simulations. A constitutive model for STF, which accounts for bulk compressibility and nonlinear, strain-rate-dependent viscosity at high strain rates, is developed and validated through laser-shock experiments. The shock response of SPLTC with different fillers at impact velocities ranging from 50 to 200 m/s is analyzed using FSI simulations. The results show that STF-filled SPLTC (SPLTC-STF) significantly improves shock resistance and energy dissipation, absorbing 1.6 times more energy than the empty SPLTC. Additionally, the effect of STF thickening properties on the shock behavior of SPLTC-STF is analyzed, revealing that higher STF viscosity reduces deformation, enhances energy absorption, and increases buckling resistance. A two-stage energy dissipation process is identified, consisting of the shock wave attenuation stage and the FSI dissipation stage. While the specific energy absorption (SEA) increases with STF viscosity, it decreases beyond a critical viscosity threshold due to reduced fluidity and weaker FSI effects. These findings underscore the potential of SPLTC-STF for impact-protection applications and highlight the importance of optimizing STF parameters for maximum energy absorption.

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来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.