圆形手性多胞管轴向冲击下的耐撞性分析

黄翠萍; 邓小林

doi:10.11858/gywlxb.20230616

圆形手性多胞管轴向冲击下的耐撞性分析

doi: 10.11858/gywlxb.20230616

黄翠萍,
邓小林^*, ,

梧州学院电子与信息工程学院, 广西梧州　543002

基金项目: 国家自然科学基金（52065059）；梧州学院校级科研项目（2022C013）

详细信息

作者简介:
黄翠萍（1992－），女，硕士，讲师，主要从事结构耐撞性与吸能研究.E-mail：huangcuiping59451@163.com

通讯作者:
邓小林（1984－），男，博士，教授，主要从事结构耐撞性及优化设计研究.E-mail：dengxiaolin3@163.com

中图分类号: O342
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出版历程
- 收稿日期: 2023-02-16
- 修回日期: 2023-03-24
- 录用日期: 2023-04-03
- 刊出日期: 2023-06-05

Crashworthiness Analysis of Circular Chiral Multicellular Tubes under Axial Impact

HUANG Cuiping,
DENG Xiaolin^{*
, ,}

School of Electronics and Information Engineering, Wuzhou University, Wuzhou 543002, Guangxi, China

摘要

摘要: 提出了不同几何结构的新型圆形手性多胞管，开展了其在相同壁厚、相同质量条件下的耐撞性分析。研究结果表明：与传统圆管相比，圆形手性多胞管具有更好的耐撞性能；相同壁厚条件下，比能量吸收和冲击力效率比传统圆管最高分别高出66.19%和49.11%；吸能效果最好的CCMT7-20（肋板数量为7、内圆直径为20 mm）与耐撞性能最差的CCMT4-40（肋板数量为4、内圆直径为40 mm）的圆形手性多胞管相比，比能量吸收和冲击力效率分别高出30.83%和22.87%。肋板数量、内圆直径和壁厚对结构耐撞性的参数化研究表明：能量吸收、初始峰值力均随着肋板数量增加而增大，比能量吸收随着肋板数量的增多变化并不明显。能量吸收、比能量吸收和冲击力效率均随着内圆直径增大而减小，管壁增厚会提升结构的能量吸收，但其初始峰值力也会相应增大。
- 圆形手性 /
- 多胞管 /
- 轴向冲击 /
- 耐撞性
Abstract: A new type of circular chiral multicellular tube with different geometric structures was proposed, and its crashworthiness was analyzed under the condition of the same wall thickness and mass. The results show that the circular chiral multicellular tube has better crashworthiness than the traditional circular tube. Under the same wall thickness, the specific energy absorption and crush force efficiency of the present structure are 66.19% and 49.11% higher than the traditional circular tube, respectively. The circular chiral multicellular tube of CCMT7-20 (7 ribs, 20 mm inner circle diameter) has the best crashworthiness. Compared to the circular chiral multicellular tube of CCMT4-40 (4 ribs, 40 mm inner circle diameter) with the worst crashworthiness, the energy absorption of CCMT7-20 is 795.35 J higher, and its specific energy absorption and crush force efficiency are 30.83% and 22.87% higher, respectively. The parametric study of the effects of the number of ribs, diameter of inner circle and wall thickness on the crashworthiness of the structure shows that the energy absorption and initial peak force increase with the increase of the number of ribs, but the specific energy absorption does not change significantly with the increase of the number of ribs. The energy absorption, specific energy absorption and crush force efficiency all decrease with the increase of inner circle diameter. The increase of wall thickness will increase the energy absorption of the structure, but the initial peak force will also increase.
- circular chirality /
- multicellular tube /
- axial impact /
- crashworthiness

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图 1 横截面形状及结构设计

Figure 1. Cross-section shape and structural design

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图 2 冲击模型示意图及铝合金6061O的材料属性

Figure 2. Schematic diagram of the impact model and material properties of aluminum alloy 6061O

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图 3 网格尺寸测试

Figure 3. Mesh size test

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图 4 数值模拟与实验结果^[16]的对比

Figure 4. Comparison between numerical simulation and experiment results^[16]

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图 5 壁厚相同时结构的能量吸收和力-位移曲线

Figure 5. Energy absorption and force-displacement curves of structures with the same wall thickness

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图 6 壁厚相同时多胞管的最终变形模式

Figure 6. Final deformation modes of multicellular tubes with the same wall thickness

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图 7 壁厚相同时结构的耐撞性分析曲线

Figure 7. Crashworthiness analysis curves of structures with the same wall thickness

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图 8 相同质量下结构的能量吸收和力-位移曲线

Figure 8. Energy absorption and force-displacement curves of structures with the same mass

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图 9 相同质量多胞管的变形模式

Figure 9. Deformation modes of multicellular tubes with the same mass

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图 10 相同质量结构的耐撞性数据分析

Figure 10. Crashworthiness data analysis of structures with the same mass

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图 11 不同肋板数量多胞管的能量吸收和力-位移曲线

Figure 11. Energy absorption and force-displacement curves of multicellular tubes with different rib numbers

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图 12 h=1.0 mm时圆形手性多胞管的变形模式

Figure 12. Deformation pattern of circular chiral multicellular tubes with h=1.0 mm

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图 13 不同肋板数多胞管的耐撞性数据分析

Figure 13. Crashworthiness data analysis of multicellular tubes with different rib numbers

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图 14 不同内圆直径下多胞管的能量吸收和力-位移曲线

Figure 14. Energy absorption and force-displacement curves of multicellular tubes with different inner circle diameters

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图 15 不同内圆直径下多胞管的耐撞性分析曲线

Figure 15. Crashworthiness analysis curves of multicellular tubes with different inner circle diameters

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图 16 不同壁厚多胞管的耐撞性分析曲线

Figure 16. Crashworthiness analysis curves of multicellular tubes with different wall thicknesses

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表 1 壁厚相同时结构的耐撞性数据

Table 1. Crashworthiness data of structures with the same wall thickness

Multicellular tubes	h/mm	m/kg	E_A/J	E_SA/(kJ·kg^–1)	F_I/kN	η/%
TCT	1.0	0.0509	646.01	12.69	18.44	43.78
CCMT4-20	1.0	0.0984	1784.28	18.13	38.30	58.23
CCMT5-20	1.0	0.1060	2116.10	19.96	42.07	62.87
CCMT6-20	1.0	0.1129	2234.87	19.95	44.75	62.42
CCMT7-20	1.0	0.1213	2552.05	21.09	48.87	65.28
CCMT4-30	1.0	0.1044	1834.21	17.63	40.41	56.74
CCMT5-30	1.0	0.1114	2045.31	18.43	43.45	58.83
CCMT6-30	1.0	0.1184	2196.29	18.61	46.63	58.87
CCMT7-30	1.0	0.1254	2327.56	18.62	49.42	58.88
CCMT4-40	1.0	0.1089	1756.70	16.12	41.33	53.13
CCMT5-40	1.0	0.1150	2026.06	17.62	43.82	57.79
CCMT6-40	1.0	0.1210	2143.38	17.71	46.40	57.74
CCMT7-40	1.0	0.1270	2219.68	17.48	48.95	56.68

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表 2 相同质量结构的耐撞性对比数据

Table 2. Comparison of crashworthiness data of structures with the same mass

Multicellular tubes	h/mm	m/kg	E_A/J	E_SA/(kJ·kg^–1)	F_I/kN	η/%
TCT	1.000	0.0509	646.01	12.69	18.44	43.78
CCMT4-20	0.517	0.0509	699.72	13.75	17.46	50.10
CCMT5-20	0.480	0.0509	696.78	13.69	17.20	50.64
CCMT6-20	0.456	0.0509	682.11	13.40	17.41	48.97
CCMT7-20	0.420	0.0509	687.61	13.51	17.05	50.40
CCMT4-30	0.488	0.0509	612.85	12.02	16.96	45.18
CCMT5-30	0.457	0.0509	636.98	12.51	16.86	47.24
CCMT6-30	0.430	0.0509	642.35	12.62	16.77	47.89
CCMT7-30	0.406	0.0509	642.00	12.61	16.64	48.22
CCMT4-40	0.467	0.0509	560.76	11.02	16.64	42.13
CCMT5-40	0.443	0.0509	594.31	11.68	16.53	44.94
CCMT6-40	0.421	0.0509	618.58	12.15	16.41	47.11
CCMT7-40	0.401	0.0509	608.46	11.95	15.96	47.64

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