Study on quasi-static penetration mechanical behavior of fiber-metal laminates
HONG Yihao
WEN Yuxi
ZHAO Shunqiu
HAN Jianlin
WU Fei
Abstract：[Objective]To address the challenge of single materials struggling to simultaneously satisfy anti-penetration performance and lightweight design requirements,the quasi-static penetration mechanical behavior and energy absorption characteristics of fiber-metal laminates with crochet core structures were investigated.[Methods]Firstly,laminate samples featuring different fiber crochet core layers were fabricated using short-needle crocheting and bonding methods,followed by quasi-static penetration tests on an electronic universal testing machine.Then,equivalent idealized numerical models were established using SolidWorks and imported into Abaqus finite element analysis software for simulations,with evaluation metrics introduced to process the test and numerical data.[Results]The numerical simulation results exhibit excellent agreement with the test curves.Single-layer cores exert a negligible effect on the peak load of the laminates,whereas double-layer or hybrid crochet structures display a pronounced buffering effect.Compared with the reference un-cored plates(40.08 kN),the peak loads of PSP and PKP laminates increase by 0.52 kN and 0.54 kN,while those of PSSP,PKKP,PSKP,and PMP laminates decrease by 13.17,0.87,10.48,and 8.12 kN,respectively.Due to reduced stiffness and expanded deformation,their energy absorption capacities significantly increase by 95.12％,80.93％,95.59％,153.2％,65.95％,and 30.70％,respectively,with the double-layer stainless steel crochet laminate(PSSP)demonstrating the optimal energy dissipation capability.
Keywords：Crochet structureFinite element simulationLaminatePenetration resistanceLight weight
Publication Date：2026-07-31
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 120-126 )