芳纶织物及其包容环的弹道冲击与数值模拟

doi:10.13475/j.fzxb.20200905009

纺织学报 ›› 2021, Vol. 42 ›› Issue (11): 56-63.doi: 10.13475/j.fzxb.20200905009

芳纶织物及其包容环的弹道冲击与数值模拟

牟浩蕾¹^,², 解江², 裴惠², 冯振宇², 耿宏章¹()

1.天津工业大学材料科学与工程学院, 天津 300387
2.中国民航大学安全科学与工程学院, 天津 300300

收稿日期:2020-09-21 修回日期:2021-07-22 出版日期:2021-11-15 发布日期:2021-11-29
通讯作者: 耿宏章
作者简介:牟浩蕾(1987—),男,副研究员。主要研究方向为结构冲击动力学。
基金资助:
航空科学基金项目(201941067001)

Ballistic impact tests and numerical simulation of aramid fabric and containment ring

MOU Haolei¹^,², XIE Jiang², PEI Hui², FENG Zhenyu², GENG Hongzhang¹()

1. School of Material Science and Engineering, Tiangong University, Tianjin 300387, China
2. College of Safety Science and Engineering, Civil Aviation University of China, Tianjin 300300, China

Received:2020-09-21 Revised:2021-07-22 Published:2021-11-15 Online:2021-11-29
Contact: GENG Hongzhang

摘要/Abstract

摘要：

为研究芳纶织物及其包容环的弹道冲击机制,通过准静态及动态拉伸实验获取材料力学性能,采用弹道冲击实验获得织物及包容环的冲击性能,同时建立多层壳模型并基于实验结果进行验证。结果表明:应变率对织物力学性能有较为显著的影响,在织物弹道冲击中织物吸能量与失效模式相关,呈现明显的边界效应;在包容环弹道冲击中,能量的耗散主要是通过纱线应变能、纱线断裂以及纱线间相互作用;相同入射速度下,织物层数越少,吸能量越少,织物层数增加时吸能量增大,但吸能增加量减小;多层壳模型能够较好地复现弹道冲击过程,仿真失效形貌、弹体剩余速度和吸能比率均与实验结果接近。

关键词: 芳纶织物, 包容环, 弹道冲击, 失效模式, 响应特性, 数值模拟

Abstract:

To investigate the ballistic impact response characteristics of aramid fabric and its containment ring, the mechanical properties of the aramid fabric were obtained by conducting the quasi-static and dynamic tensile tests, and the impact performance of the aramid fabric plate and its containment ring were determined by conducting the ballistic impact tests. The numerical multi-layer shell models were built and verified using the test results. The research results show that the strain rate has a significant effect on the mechanical properties of the aramid fabric.For the fabric ballistic impact tests, the energy absorption of the aramid fabric is related to the failure mode, and there are obvious boundary effects. For the ballistic impact tests on the containment ring, the energy is dissipated mainly through the yarn strain energy, the yarn breakage and the interaction between yarns. At the same incident velocities, the smaller is the number of layers, the less energy is absorbed. When the number of fabric layers increases, the more energy is absorbed, but the increment of energy absorption decreases. The multi-layer shell models can well reproduce the ballistic impact process, and the simulated failure morphology, the residual velocity of projectile, and the absorbed energy percent difference are close to the test results, which can effectively verify the multi-layer shell models.

Key words: aramid fabric, containment ring, ballistic impact, failure mode, response characteristic, numerical simulation

中图分类号:

V231.91

牟浩蕾, 解江, 裴惠, 冯振宇, 耿宏章. 芳纶织物及其包容环的弹道冲击与数值模拟[J]. 纺织学报, 2021, 42(11): 56-63.

MOU Haolei, XIE Jiang, PEI Hui, FENG Zhenyu, GENG Hongzhang. Ballistic impact tests and numerical simulation of aramid fabric and containment ring[J]. Journal of Textile Research, 2021, 42(11): 56-63.

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实验编号	弹体质量/g	层数	入射速度/ (m·s^-1)	剩余速度/ (m·s^-1)	ΔE/%	V₅₀/ (m·s^-1)	结果
1^#	175.9	2	137.4	130.40	9.93	43.3	穿透
2^#	175.9	4	129.8	106.00	33.30	74.9	穿透
3^#	175.6	6	133.8	85.80	58.90	102.6	穿透
4^#	175.9	8	131.8	0	100.00	—	未穿透
5^#	176.0	6	103.0	0	100.00	—	未穿透
6^#	175.5	6	122.0	22.27	96.70	119.9	穿透
7^#	174.3	6	152.4	103.80	53.60	111.6	穿透

实验编号	弹体质量/g	层数	入射速度/ (m·s^-1)	剩余速度/ (m·s^-1)	ΔE/%	V₅₀/ (m·s^-1)	结果
1^*	175.4	2	140.0	115.0	32.5	79.8	穿透
2^*	175.4	4	140.4	84.5	63.8	111.6	穿透
3^*	175.6	6	141.4	42.7	90.9	134.8	穿透
4^*	175.7	8	140.8	0	100.0	—	未穿透
5^*	175.4	6	119.3	0	100.0	—	未穿透
6^*	175.9	6	131.1	22.1	97.2	129.2	穿透
7^*	175.7	6	146.2	66.9	78.8	130.0	穿透

实验编号	层数	入射速度/ (m·s^-1)	剩余速度/(m·s^-1)		吸能比率/%
实验编号	层数	入射速度/ (m·s^-1)	实验	仿真	实验	仿真	差值
1^*	2	137.4	130.40	121.0	9.93	22.4	-12.47
2^*	4	129.8	106.00	112.0	33.30	25.5	7.80
3^*	6	133.8	85.80	71.6	58.90	71.4	-12.50
4^*	8	131.8	0	0	100.00	100.0	0
5^*	6	122.0	22.27	60.9	96.70	75.0	21.70
6^*	6	152.4	103.80	98.5	53.60	58.2	-4.60

实验编号	入射速度/ (m·s^-1)	剩余速度/(m·s^-1)		吸能比率/%
实验编号	入射速度/ (m·s^-1)	实验	仿真	实验	仿真	差值
1^*	140.0	115.0	110.2	32.5	38.4	-5.9
2^*	140.4	84.5	88.2	63.8	60.5	3.3
3^*	141.4	42.7	43.4	90.8	90.6	0.2
4^*	140.8	0	-21.6	100.0	97.6	2.4
5^*	119.3	0	0	100.0	100.0	0
6^*	131.1	22.1	20.3	97.2	97.6	-0.4
7^*	146.2	66.9	70.9	79.1	76.5	2.6

芳纶织物及其包容环的弹道冲击与数值模拟

Ballistic impact tests and numerical simulation of aramid fabric and containment ring

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