一种横截面为正五/六边形的四层复合材料管轴向冲击吸能研究

doi:10.12382/bgxb.2021.0732

摘要/Abstract

摘要：

纸瓦楞夹层管为耐撞性问题提供了一种新思路。针对由聚乙烯泡沫对纸瓦楞夹层双管的双填充构型，利用轴向跌落冲击对比试验和参数化分析，重点研究这种四层复合材料管的缓冲吸能特性以及结构和冲击参数的影响。研究结果表明：双填充X轴方向瓦楞夹层双管的塑性平台区明显长于双填充Y轴方向双管，其吸能效果优于双填充Y轴方向双管；随着管横截面边数的增加，双填充双管的比吸能、单位体积吸能、比总体效率、平均压溃应力都下降；随着落锤质量的增加，双填充双管的缓冲吸能特性都递增；管长比为3.0时，双填充X轴方向正五边形双管的总吸能和比吸能分别比正六边形管提高了15.6%和48.8%，而双填充Y轴方向双管分别提高了14.4%和47.9%；管长比为2.2的双填充双管的初始峰值应力高于管长比为1.4和3.0的双填充双管，抗冲击性能更好。

关键词: 纸瓦楞夹层双管, 聚乙烯泡沫, 双填充, 轴向跌落冲击, 缓冲吸能特性

Abstract:

The paper corrugation sandwich tube provides an innovative solution to deal with impact. For the polyethylene foam double-filled configuration of paper corrugation sandwich tube, the energy absorption of the four-layered tube and the influence of geometrical and loading parameters are investigated through comparison tests of axial drop impact and parametric analysis. According to the results, the length of plastic plateau of the X-direction corrugation sandwich double-tube with double-filling is much longer than that of the Y-direction double-tube, and the energy absorption of the former is better than that of the latter. The specific energy absorption, unit volume energy absorption, specific total efficiency, and average crushing stress of the double-tube with double-filling decrease as a whole with the increase of the edge number of the tube. Whereas, as the mass of the drop hamper increases, the energy absorption of the tube increases. For the tube length ratio of 3.0, the total energy absorption and specific energy absorption of the X-direction regular pentagonal double-tube increase by 15.6% and 48.8%, respectively, compared with those of the hexagonal tube; the numbers for Y-direction double-tube are 14.4% and 47.9%. The double-tube with a tube length ratio of 2.2 has better higher impact resistance and initial peak stress than those with tube length ratios of 1.4 and 3.0.

Key words: paper corrugation sandwich double-tube, polyethylene foam, double-filling, axial drop impact, cushioning energy absorption

陈升辉, 郭彦峰, 付云岗, 马小茭, 秦芳. 一种横截面为正五/六边形的四层复合材料管轴向冲击吸能研究[J]. 兵工学报, 2023, 44(3): 876-885.

CHEN Shenghui, GUO Yanfeng, FU Yungang, MA Xiaojiao, QIN Fang. Cushioning Energy Absorption of Four-layered Composite Tubes with Regular Pentagon and Hexagon Cross-sections under Axial Drop Impact[J]. Acta Armamentarii, 2023, 44(3): 876-885.

图/表 16

参考文献 28

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结构参数						冲击参数
管方向	横截面边数	外管的管长比	外管横截面边长/mm	泡沫填充层的厚度/mm	管长度/mm	跌落高度DH/cm	落锤质量W/kg
X轴、 Y轴	5, 6	1.4, 2.2, 3.0	50	10	70, 110, 150	30, 50, 70	7.0, 9.125, 11.275, 4.55

结构参数						冲击参数
管方向	横截面边数	外管的管长比	外管横截面边长/mm	泡沫填充层的厚度/mm	管长度/mm	跌落高度DH/cm	落锤质量W/kg
X轴、 Y轴	5, 6	1.4, 2.2, 3.0	50	10	70, 110, 150	30, 50, 70	7.0, 9.125, 11.275, 4.55

冲击条件	CT5X-2.2-DD		CT5Y-2.2-DD		CT5X-3.0-DD		CT5Y-3.0-DD		CT6X-2.2-DD		CT6Y-2.2-DD
冲击条件	G_m/g	τ/ms	G_m/g	τ/ms	G_m/g	τ/ms	G_m/g	τ/ms	G_m/g	τ/ms	G_m/g	τ/ms
DH₁W₁	31.69	17.19	119.02	8.65	40.30	16.49	116.18	6.82	31.91	17.67	154.01	5.45
DH₁W₃	24.63	28.82	89.26	9.56	27.71	23.48	95.58	8.51	32.34	35.08	95.39	7.75
DH₂W₁	35.10	23.99	130.69	7.48	34.07	23.08	133.18	7.16	48.04	18.99	129.62	6.67
DH₂W₃	30.64	30.78	86.30	8.62	27.34	30.67	75.62	9.73	32.11	26.02	104.84	8.23
DH₃W₁	38.04	21.67	112.04	10.19	54.57	27.82	124.71	7.58	52.01	20.83	135.29	7.48
DH₃W₃	27.80	37.23	100.83	10.15	25.88	31.14	82.55	11.22	34.44	36.02	104.37	10.77

冲击条件	CT5X-2.2-DD		CT5Y-2.2-DD		CT5X-3.0-DD		CT5Y-3.0-DD		CT6X-2.2-DD		CT6Y-2.2-DD
冲击条件	G_m/g	τ/ms	G_m/g	τ/ms	G_m/g	τ/ms	G_m/g	τ/ms	G_m/g	τ/ms	G_m/g	τ/ms
DH₁W₁	31.69	17.19	119.02	8.65	40.30	16.49	116.18	6.82	31.91	17.67	154.01	5.45
DH₁W₃	24.63	28.82	89.26	9.56	27.71	23.48	95.58	8.51	32.34	35.08	95.39	7.75
DH₂W₁	35.10	23.99	130.69	7.48	34.07	23.08	133.18	7.16	48.04	18.99	129.62	6.67
DH₂W₃	30.64	30.78	86.30	8.62	27.34	30.67	75.62	9.73	32.11	26.02	104.84	8.23
DH₃W₁	38.04	21.67	112.04	10.19	54.57	27.82	124.71	7.58	52.01	20.83	135.29	7.48
DH₃W₃	27.80	37.23	100.83	10.15	25.88	31.14	82.55	11.22	34.44	36.02	104.37	10.77

试样类型	E/J	SEA/(J•g^-1)	STE/kg^-1	e(/J•cm^-3)	σ_max/MPa	σ_m/MPa	CFE/%
CT5X-2.2-DD-50/14.55	121.20	1.94	5.26	0.17	0.50	0.42	83.31
CT5Y-2.2-DD-50/14.55	102.69	1.54	1.47	0.14	1.43	1.54	107.40
CT5X-3.0-DD-70/14.55	181.23	2.13	3.03	0.18	0.70	0.43	61.00
CT5Y-3.0-DD-70/14.55	145.11	1.727	1.46	0.15	1.18	1.23	104.00