材料科学
弹道冲击
弹道极限
航空航天
斜格
损伤容限
复合数
结构工程
剪切(地质)
残余物
航程(航空)
结构材料
极限(数学)
残余应力
适应性
复合材料层合板
结构刚度
刚度
结构健康监测
机械工程
材料性能
射弹
材料设计
仿生学
联锁
灾难性故障
复合材料
航空航天材料
材料失效理论
航空航天工程
计算模型
合理设计
稳健性(进化)
刚度(电磁)
碳纤维
作者
Haibo Ji,Xin Wang,Bingyang Li,Zengshen Yue,Xiang Xu,Rui Zhang,Zhen Li,Han Meng,Tian Jian Lu,Pengfei Wang
标识
DOI:10.1002/adfm.202518065
摘要
Abstract The rapid advancement of aerospace, defense, and other fields has placed increasing demands on structural materials to deliver robust protective functions under extremely variable conditions, including impacts over a wide range of loading velocities and directions. However, traditional materials often face limitations in simultaneously achieving these properties. Herein, an advanced biomimetic carbon fiber‐reinforced composite material featuring a symmetric Bouligand (SB) structure is proposed. The SB structure combines mid‐plane symmetry to minimize residual stresses with mechanics‐driven optimization of inter‐ply angles to enhance interlaminar performance. This rational design endows the material with exceptional energy‐absorption capabilities, superior damage tolerance, and remarkable adaptability across a wide range of extreme impact conditions, including low‐velocity (LV), high‐velocity (HV), and oblique impacts. Experimental results demonstrate that the SB‐structured composites achieve a 277% increase in LV energy absorption and a 116% increase in HV ballistic limit compared with existing Bouligand‐structured composites; even oblique HV impacts on the SB‐structured composites lead to an extra 16% ballistic limit elevation. Computational simulations elucidate how the SB structure redistributes interlaminar shear stress, promotes beneficial crack twisting, and delays damage propagation. This biomimetic design framework provides a pathway for the development of next‐generation lightweight materials tailored for aerospace and other critical engineering applications.
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