Low-velocity impact response of sandwich composite panels with shear thickening gel filled honeycomb cores

被引：16
|
作者：
Lin, Gaojian [1 ]
Li, Jiaqi [1 ]
Li, Fei [2 ]
Chen, Pengwan [1 ]
Sun, Weifu [1 ,3 ]
机构：
[1] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
[2] Beijing Inst Elect & Mech Engn, Beijing 100074, Peoples R China
[3] Beijing Inst Technol, Chongqing Innovat Ctr, Chongqing 401120, Peoples R China
来源：
COMPOSITES COMMUNICATIONS | 2022年 / 32卷
关键词：
Shear thickening gel; Sandwich composite panels; Low-velocity impact; Energy absorption; BEHAVIOR; TRENDS;
D O I：
10.1016/j.coco.2022.101136
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Sandwich composite panels (SCPs) with carbon fiber reinforced plastic (CFRP) facings and honeycomb core are susceptible to impact damage. In this study, a method is proposed to improve the impact resistance and energy absorption capacity of SCPs by filling the honeycomb core with a shear-thickening gel (STG) mixed with silica particles. The low-velocity impact responses of the SCPs have been analyzed including the drop hammer ricochet from front facing, ricochet from back facing, and complete perforation. The load-displacement curves and damage patterns indicate that STG-filled honeycomb core could effectively decrease the penetration depth and reduce impact damage of the SCPs. Finite element simulations based on the Coupled Euler-Lagrangian (CEL) method were conducted to reveal the underlying mechanism for the enhanced anti-impact capacity of the SCP filled with STG.
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页数：5
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