高共面/异面抗冲击承载能力的新型蜂窝设计及吸能评估

廖就; 李志刚; 梁方正; 王佳铭; 刘婉婷; 李萌; 冯建文

doi:10.11883/bzycj-2020-0262

高共面/异面抗冲击承载能力的新型蜂窝设计及吸能评估

doi: 10.11883/bzycj-2020-0262

1.
北京交通大学机械与电子控制工程学院，北京 100044
2.
中国空间技术研究院钱学森空间技术实验室，北京 100094
3.
中国民用航空适航审定中心，北京 100102

基金项目: 装备预研教育部联合基金（青年人才）(6141A02033121)；中央高校基本科研业务费资助项目(2019JBM048)；载人航天预研项目(040202)

详细信息

作者简介:
廖　就（1997－　），男，硕士，19126051@bjtu.edu.cn

通讯作者:
李志刚（1983－　），男，博士，副教授，zgli@bjtu.edu.cn

中图分类号: O347
计量
- 文章访问数: 530
- HTML全文浏览量: 328
- PDF下载量: 73
- 被引次数: 0
出版历程
- 收稿日期: 2020-08-03
- 修回日期: 2020-11-30
- 网络出版日期: 2021-07-20
- 刊出日期: 2021-08-05

Design and evaluation of new honeycomb configurations with high in-plane /out-of-plane loading-carrying capacity under impact

1.
School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China
2.
Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China
3.
Airworthiness Certification Center, Civil Aviation Administration of China, Beijing 100102, China

摘要

摘要: 针对传统蜂窝共面和异面承载能力差距太大的问题，提出了胞壁弓字形弯折蜂窝、层间组合蜂窝和折叠蜂窝等3种新型蜂窝，建立了新型蜂窝的有限元模型并分析了其变形模式和承载能力。结果表明，在相对密度一致的前提下，与传统正六边形蜂窝相比，这3种新构型蜂窝均缩小了共面和异面方向承载能力的差距。其中胞壁弓字形弯折蜂窝的共面/异面承载比提高了21.3倍；层间组合蜂窝两个共面方向承载能力悬殊，承载能力更强的共面方向与异面的承载比值提高了42倍；折叠蜂窝则提高了21.3倍。研究结果可以为抗多向冲击载荷作用下的蜂窝结构设计提供新思路和参考。
- 蜂窝 /
- 胞元构型 /
- 吸能 /
- 共面 /
- 异面
Abstract: An aluminum honeycomb is widely used in the field of impact cushioning because of its excellent performance. In order to solve the problem of large difference between the in-plane and out-of-plane load-carrying capacities of traditional honeycombs, three new configurations of honeycombs were proposed as follows: bow-shaped, staggered and folded configurations. The finite element models for these new honeycombs were established, and their deformation modes and load-carrying capacities were analyzed. The results show that under the same relative density, compared with the traditional hexagonal honeycombs, the three new configurations can reduce the difference of load-carrying capacity in in-plane and out-of-plane directions. The average in-plane/out-of-plane (I/O) ratio of loading-carrying capacity of the bow-shaped honeycombs in two coplanar directions increased by 21.3 times. For the staggered honeycomb, the load-carrying capacity of each in-plane direction is of great difference, in which the I/O ratio of the excellent direction is increased by 42 times due to its special structure. For the folded honeycomb, the I/O ratio is increased by 21.3 times on average. The research results can provide a new idea and reference for the design of honeycomb structure under multi-directional impact load.
- honeycomb /
- cell configuration /
- energy absorption /
- in-plane /
- out-of-plane

HTML全文

图 1 胞壁弓字形弯折蜂窝设计思路

Figure 1. Design of the bow-shaped honeycomb

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图 2 层间组合蜂窝设计思路

Figure 2. Design of the staggered honeycomb

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图 3 折叠蜂窝设计思路

Figure 3. Design of the folded honeycomb

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图 4 蜂窝压缩试验

Figure 4. Compression tests on honeycombs

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图 5 仿真结果试验验证

Figure 5. Comparison of the compressive stress-strain curves between test and simulation

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图 6 在10 m/s速度下试验和仿真的对比

Figure 6. Comparison of the platform stress and deformation model between test and simulation at 10 m/s

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图 7 胞壁弓字形折叠蜂窝仿真模型

Figure 7. The finite element model of the bow-shaped honeycomb

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图 8 胞壁弓字形弯折蜂窝异面变形过程

Figure 8. The deformation mode of the bow-shaped honeycomb under crush in out-of-plane direction

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图 9 胞壁弓字形弯折蜂窝应力应变曲线

Figure 9. The stress-strain curves of the bow-shaped honeycomb in in-plane and out-of-plane directions

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图 10 胞壁弓字形弯折蜂窝共面变形过程

Figure 10. The deformation mode of the bow-shaped honeycomb under crush in in-plane direction

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图 11 层间组合蜂窝仿真模型

Figure 11. The finite element model of the staggered honeycomb

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图 12 层间组合蜂窝异面和共面x方向变形模式

Figure 12. The deformation mode of the staggered honeycomb in in-plane direction (x axis direction) and out-of-plane direction

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图 13 层间组合蜂窝应力应变曲线

Figure 13. The stress-strain curves of the staggered honeycomb in in-plane and out-of-plane directions

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图 14 层间组合蜂窝共面y方向变形模式

Figure 14. The deformation mode of the staggered honeycomb in in-plane (y-axis) direction

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图 15 折叠蜂窝有限元模型

Figure 15. The finite element model of the folded honeycomb

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图 16 折叠蜂窝异面压缩变形模式

Figure 16. The deformation mode of the folded honeycomb under crush in out-of-plane direction

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图 17 折叠蜂窝共面x压缩变形模式

Figure 17. The deformation mode of the folded honeycomb under crush in in-plane (x-axis) direction

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图 18 折叠蜂窝应力应变曲线

Figure 18. The stress-strain curves of the folded honeycomb in in-plane and out-of-plane directions

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图 19 折叠蜂窝共面y压缩变形模式

Figure 19. The deformation mode of the folded honeycomb under crush in-plane (y-axis) direction

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图 20 铝蜂窝压缩特性曲线

Figure 20. The compression curve of an aluminum honeycomb

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图 21 平台应力比较

Figure 21. Comparison of the platform stressamong different honeycombs

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图 22 共面与异面质量比吸能对比

Figure 22. Comparison of the mass-specific energy absorption of different honeycombs in out-of-plane and in-plane directions

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表 1 不同构型蜂窝的尺寸

Table 1. The sizes of different honeycombs

蜂窝类型	h/mm	l/mm	t/mm	a/mm	x/mm	α/(°)	γ/(°)	相对密度	质量/g	体积/mm³
胞壁弓字形弯折蜂窝	30	3.43	0.03	10	5			0.02	2.607	50 434
层间组合蜂窝	30	5.2	0.03					0.02	1.112	19 670
折叠蜂窝篇	30	1.73	0.03			75	75	0.02	0.745	13 733

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表 2 不同构型蜂窝结构的平台应力

Table 2. Platform stresses for different honeycombs

蜂窝类型	平台应力/MPa			K_x	K_y
蜂窝类型	异面	共面x	共面y	K_x	K_y
六边形蜂窝	1.120	0.020	0.0205	0.018	0.018
弓字形弯折蜂窝	0.760	0.290	0.300	0.381	0.395
层间组合蜂窝	0.419	0.322	0.029	0.768	0.069
折叠蜂窝	0.366	0.200	0.087	0.540	0.240

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表 3 不同构型蜂窝结构的质量比吸能

Table 3. Specific mass energy absorptionfor different honeycombs

蜂窝类型	质量比吸能/（J·g⁻¹）			R_x	R_y
蜂窝类型	异面	共面x	共面y	R_x	R_y
六边形蜂窝	15.546	0.273	0.324	0.018	0.021
弓字形弯折蜂窝	12.000	3.920	3.951	0.327	0.329
层间组合蜂窝	5.337	4.071	0.544	0.763	0.102
折叠蜂窝	5.391	2.800	1.371	0.520	0.254

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