存储参数对适航用冰雹力学性能的影响

刘业伟; 张丽芬; 葛鑫; 刘振侠

doi:10.13224/j.cnki.jasp.20230353

存储参数对适航用冰雹力学性能的影响

doi: 10.13224/j.cnki.jasp.20230353

刘业伟^1,,
张丽芬^1,*, ,,
葛鑫^{1, 2},
刘振侠¹

1.
西北工业大学动力与能源学院，西安 710072
2.
中航工业第一飞机设计研究院质量适航安全部，西安 710072

详细信息

作者简介:
刘业伟（1996-），男，博士生，主要从事飞机结冰和防除冰研究。E-mail：1136424031@qq.com

通讯作者:
张丽芬（1980-），女，副教授，博士，主要从事发动机结/防冰、冰晶结冰及适航研究。E-mail：zhanglifen@nwpu.edu.cn

中图分类号: V321.24
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出版历程
- 收稿日期: 2023-05-26
- 网络出版日期: 2024-08-21

Influence of storage parameters on the mechanical properties of hail for airworthiness

LIU Yewei^1
,,
ZHANG Lifen^{1,*
, ,},
GE Xin^{1, 2},
LIU Zhenxia¹

1.
School of Power and Energy，Northwestern Polytechnical University，Xi’an 710072，China
2.
Quality and Airworthiness Safety Department，the First Aircraft Institute，Aviation Industry Corporation of China，Limited，Xi’an 710072，China

摘要

摘要:
人工冰雹多用于飞行器外壳及发动机测试中，其力学性能对测试结果有直接影响。考虑人工冰雹在制作完成后的存储问题，借助试验研究的方法，探究了存储参数（存储温度、存储时间）对人工冰雹力学性能的影响。在存储温度方面，结果表明在−10、−15 ℃和−25 ℃的3种存储温度下，纯冰冰雹和含棉冰雹的最大抗压强度值均有一定程度的增大，最大增加量分别为73%和80%。在存储时间方面，结果表明在−20 ℃条件下分别存储5、10 h和20 h后，纯冰冰雹和含棉冰雹的最大抗压强度值均呈现先减小后增大的趋势，并在存储20 h条件下取得最大值，相比未进行存储的冰雹分别增大了113%和54%。因此，存储参数对于冰雹力学性能的影响不可忽视，需在适航测试过程中加以考虑。
- 人工冰雹 /
- 最大抗压强度 /
- 适航测试 /
- 存储参数 /
- 力学性能
Abstract:
Artificial hail is mostly used in aircraft shell and engine testing, and its mechanical properties have a direct impact on the test results. Considering the storage problem of artificial hail after production, the influences of storage parameters (storage temperature and time) on the mechanical properties of artificial hails were explored with the help of experimental research methods. In terms of storage temperature, the results showed that the estimated maximum compressive strength values of pure ice hails and cotton-containing hails increased to a certain extent at −10, −15 ℃ and −25 ℃ storage temperatures, and the maximum increment was 73% and 80%. In terms of storage time, the results showed that after storage for 5, 10 h and 20 h at −20 ℃, the estimated maximum compressive strength values of pure ice hails and cotton-containing hails showed a trend of first decrease and then increase, and the maximum value was obtained under the condition of 20 hours of storage, which increased by 113% and 54%, respectively, compared with the unstored hails. Therefore, the influences of storage parameters on the mechanical properties of hail cannot be ignored and need to be considered during airworthiness testing.
- artificial hails /
- estimating maximum compressive strength /
- airworthiness tests /
- storage parameters /
- mechanical properties

HTML

图 1 冰雹模具

Figure 1. Mold of hail

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图 2 高精度分析天平

Figure 2. High-precision analytical balances

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图 3 纯冰冰雹和含棉冰雹

Figure 3. Pure ice hail and cotton-containing hailstones

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图 4 低温恒温箱

Figure 4. Low temperature thermostat

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图 5 低温万能试验机

Figure 5. Low temperature universal testing machine

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图 6 压力预估参数图解

Figure 6. Diagram of pressure estimation parameters

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图 7 不同存储温度下纯冰冰雹的载荷随位移的变化

Figure 7. Displacement-load relationship of pure ice hail at different storage temperatures

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图 8 纯冰冰雹的最大抗压强度随存储温度的变化

Figure 8. Scatter plot of storage temperature estimated maximum compressive strength of pure ice hail

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图 9 不同存储温度下含棉冰雹的载荷随位移的变化

Figure 9. Load of hails containing cotton at different storage temperatures varies with displacement

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图 10 不同存储温度下含棉冰雹的最大抗压强度随位移的变化

Figure 10. Estimated maximum compressive strength of hails containing cotton at different storage temperatures with displacement

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图 11 不同存储时间下纯冰冰雹的载荷随位移的变化

Figure 11. Load of pure hailstones varies with displacement at different storage times

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图 12 纯冰冰雹的最大抗压强度随存储时间的变化

Figure 12. Estimated maximum compressive strength of pure hailstones varies with storage time

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图 13 不同存储时间下含棉冰雹的载荷随位移的变化

Figure 13. Load of hails containing cotton varies with displacement at different storage times

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图 14 不同存储时间下含棉冰雹的最大抗压强度随位移的变化

Figure 14. Estimated maximum compressive strength of hails containing cotton with different storage times varies with displacement

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表 1 冰雹样本

Table 1. Hail samples

参数纯冰冰雹含棉冰雹
冰雹直径/mm 25 25
棉纤维质量/g 0 0.442
含棉质量分数/% 0 6
样本个数 4～6 4～6

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表 2 纯冰冰雹在不同存储条件下的估算抗压强度平均值

Table 2. Estimated mean compressive strength of pure ice hail under different storage conditions

存储条件最大抗压强度平均值/MPa

−25 ℃存储 13.77

−15 ℃存储 14.48

−10 ℃存储 15.95

不进行存储 9.21

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