Impact Resistance and Energy Absorption Properties of CFRP Thin-walled Circular Tube with Porous Arrays

doi:10.12382/bgxb.2024.0074

Abstract

Abstract:

In order to improve the impact resistance and energy absorption of thin-walled circular tube,a carbon fiber reinforced composites (CFRP) thin-walled tube with porous array is designed to investigate its impact resistance and energy absorption performance under axial and transverse impact loads,respectively.A finite element model of CFRP thin-walled tube with porous arrays under impact loading is established based on the finite element method (FEM).The effects of different lay-up angles on the impact resistance and energy-absorbing properties of the structure are analyzed.Numerical results show that CFRP thin-walled circular tube with porous arrays has higher specific energy absorption and peak load,which are too high for the protected structure.But the peak impact load and specific energy absorption values can be changed by varying the lay-up angle of CFRP in order to enhance impact damage resistance.The maximum compression load within the effective compression displacement is reduced by about 10.1% and the specific energy absorption value is increased by about 15.1% when the lay-up angle of thin-walled circular tube with porous arrays is changed from [90°/45°/90°/0°]_2S to [90°/0°/90°/0°]_2S under axial impact loading.The preliminary results will be a guide for the engineering application of lightweighting and impact resistance enhancement of CFRP thin-walled tube.

Key words: carbon fiber reinforced composites, thin-walled circular tube with porous arrays, impact resistance, energy absorbing, finite element analysis

CLC Number:

O341

JIN Yue, MIAO Fuxing. Impact Resistance and Energy Absorption Properties of CFRP Thin-walled Circular Tube with Porous Arrays[J]. Acta Armamentarii, 2025, 46(2): 240074-.

Figures/Tables 15

References 26

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模量/MPa						泊松比			强度/MPa									阻尼系数	密度/ (g·cm^-3)
E₁₁	E₂₂	E₃₃	G₂₃	G₁₂	G₁₃	u₂₃	u₁₂	u₁₃	X_T	X_C	Y_T	Y_C	Z_T	Z_C	S₂₃	S₁₂	S₁₃	β	ρ
114000	8610	8610	3000	4160	4160	0.45	0.3	0.3	2688	1458	69.5	236	55.5	175	95.6	136	136	1E-9	1.51

模量/MPa						泊松比			强度/MPa									阻尼系数	密度/ (g·cm^-3)
E₁₁	E₂₂	E₃₃	G₂₃	G₁₂	G₁₃	u₂₃	u₁₂	u₁₃	X_T	X_C	Y_T	Y_C	Z_T	Z_C	S₂₃	S₁₂	S₁₃	β	ρ
114000	8610	8610	3000	4160	4160	0.45	0.3	0.3	2688	1458	69.5	236	55.5	175	95.6	136	136	1E-9	1.51

模量/MPa			强度/MPa			断裂韧性/(J·m^-2)
E_n	E_t	E_s	N_max	T_max	S_max	G_IC	G_IIC	G_IIIC
57878	57878	37489	59.4	77	77	0.5544	2.8116	2.8116

模量/MPa			强度/MPa			断裂韧性/(J·m^-2)
E_n	E_t	E_s	N_max	T_max	S_max	G_IC	G_IIC	G_IIIC
57878	57878	37489	59.4	77	77	0.5544	2.8116	2.8116

吸能指标	实验结果^[22]	本文模拟	相对误差/%
F_p/kN	50.34	48.13	4.4
F_m/kN	26.37	25.90	1.8
W_s/(kJ·kg^-1)	53.99	53.75	0.4