自适应底座附加冲击载荷的积分表达和影响因子

仲健林; 任杰; 蔡德咏; 胡建国

doi:10.11883/1001-1455(2015)05-0668-07

自适应底座附加冲击载荷的积分表达和影响因子

doi: 10.11883/1001-1455(2015)05-0668-07

仲健林¹,
任杰^1, ,,
蔡德咏²,
胡建国^{1, 3}

1.
南京理工大学机械工程学院，江苏南京 210094
2.
72465部队，山东济南 250022
3.
西安现代控制技术研究所，陕西西安 710065

基金项目: 国家自然科学基金项目(51303081);江苏省自然科学基金项目(BK20130761)

详细信息

作者简介:
仲健林(1988—), 男, 博士研究生

通讯作者:
任杰, renjie@njust.edu.cn

中图分类号: O381
计量
- 文章访问数: 2723
- HTML全文浏览量: 382
- PDF下载量: 273
- 被引次数: 0
出版历程
- 收稿日期: 2014-03-19
- 修回日期: 2014-05-12
- 刊出日期: 2015-10-10

Integral expression and affecting factors for the additional impact load of an adaptive base

1.
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
72465 Army, Jinan 25002, Shandong, China
3.
Xi'an Modern Control Technology Research Institute, Xi'an 710065, Shaanxi, China

摘要

摘要: 为研究附加冲击载荷的解析方法和影响因子，推导了附加冲击载荷的积分表达式，获得了影响附加冲击载荷的3个主要参数；建立底座的数值模型，并通过实验验证了数值模型建立方法的正确性。在数值模型基础上，结合MISO(multiple-input, single-output)多元广义多项式神经网络方法，建立了底座力学特性数学模型，对附加冲击载荷的影响因子进行智能决策分析。分析结果表明：对于附加冲击载荷的影响因子由高到低排序为帘线模量、截面面积、帘线间距，且当相应参数的变化导致附加冲击载荷增大时，该参数对附加冲击载荷的影响因子逐渐减小。
- 爆炸力学 /
- 影响因子 /
- 数值模型 /
- 自适应底座 /
- 附加冲击载荷
Abstract: To research the analytical method and affecting factors of the additional impact load, an integral expression formula was derived for the additional impact load. Three major parameters affecting the additional impact load were obtained. A numerical model was built for the adaptive base. And the correctness of this modeling method was verified by the test. Based on the built numerical model, a mathematic model was developed by combining the MISO (multiple-input, single-output) multivariate generalized polynomials neural network to describe the mechanical properties of the adaptive base. Thereby, the intelligent decision analysis was conducted for the affecting factors of the additional impact load. The analysis results show that the affecting factors for the additional impact load from high to low levels are cord modulus, section area and cord spacing. If the change of one parameter would cause the additional load to increase, the affecting factor by the corresponding parameter on the additional impact load decreases.
- mechanics of explosion /
- affecting factor /
- numerical model /
- adaptive base /
- additional impact load

HTML全文

图 1 悬垂弹射系统

Figure 1. Drape ejection system

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图 2 膨胀状态自适应底座示意图

Figure 2. Diagrammatic sketch of adaptive base in expansion state

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图 3 柱坐标系中的dA

Figure 3. dA in the cylindrical coordinate system

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图 4 积分区域的水平地面投影

Figure 4. Horizontal ground projection of integration region

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图 5 自适应底座数值模型

Figure 5. The numerical model for the adaptive base

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图 6 实验平台示意图

Figure 6. Schematic diagram of the experimental platform

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图 7 附加冲击载荷对比

Figure 7. Comparison of additional impact load

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图 8 附加冲击载荷峰值的解析解与数值解

Figure 8. Numerical solutions and analytical solutions of the maximum additional impact load

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图 9 参数化数值模型输入参数

Figure 9. Input parameters of the parametric numerical model

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图 10 参数化数值模型输出参数

Figure 10. Output parameters of the parametric numerical model

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图 11 数学模型误差分析

Figure 11. Error analysis of mathematic model

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图 12 附加冲击载荷峰值变化比例曲线

Figure 12. Change ratio of the peak additional impact load

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表 1 附加冲击载荷峰值计算结果

Table 1. The calculation results of the peak additional impact load

γ/%	(F/(pS))_E	(F/(pS))_A	(F/(pS))_d
-50	-0.221 8	-0.226 7	-0.284 2
-45	-0.230 2	-0.235 0	-0.283 7
-40	-0.237 2	-0.241 8	-0.282 6
-35	-0.245 5	-0.248 6	-0.282 1
-30	-0.250 4	-0.255 0	-0.281 0
-25	-0.257 6	-0.260 1	-0.280 2
-20	-0.262 5	-0.264 4	-0.279 1
-15	-0.266 5	-0.267 9	-0.278 3
-10	-0.269 7	-0.271 1	-0.277 8
-5	-0.272 7	-0.274 0	-0.277 0
0	-0.276 5	-0.276 5	-0.276 5
5	-0.276 9	-0.276 7	-0.274 7
10	-0.277 9	-0.278 1	-0.273 0
15	-0.279 0	-0.2789	-0.271 1
20	-0.280 1	-0.279 7	-0.268 8
25	-0.280 8	-0.280 2	-0.266 1
30	-0.281 5	-0.280 5	-0.264 0
35	-0.281 9	-0.281 0	-0.261 2
40	-0.283 0	-0.281 6	-0.258 7
45	-0.283 3	-0.281 8	-0.253 9
50	-0.284 4	-0.282 1	-0.247 7

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