导弹四级磁场电枢轨道过盈配合参数优化

童思远; 冯刚; 杨志勇; 苗海玉; 刘瑜倩

doi:10.11884/HPLPB201931.180252

导弹四级磁场电枢轨道过盈配合参数优化

doi: 10.11884/HPLPB201931.180252

空军工程大学防空反导学院, 西安 710051

基金项目:

陕西省自然科学基金项目 2018JM5155

详细信息

作者简介:
童思远(1995—)，男，硕士研究生，主要从事电磁发射研究; 504806552@qq.com

中图分类号: TJ768.2
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- 被引次数: 0
出版历程
- 收稿日期: 2018-09-28
- 修回日期: 2018-11-01
- 刊出日期: 2019-01-15

Optimization of interference fit between armature and rail in missile's quadrupole electromagnetic field

Air Defense and Missile Defense, Air Force Engineering University, Xi'an 710051, China

摘要

摘要: 为了促进四级电磁轨道发射器在地空导弹武器发射中的应用，对四级电枢的过盈结构进行了研究。在有限元软件Ansys Workbench三维过盈装配仿真的基础上，选择最大等效应力、接触面积系数、接触压强均匀系数和相对接触压强系数四个表征接触特性的评价指标，采用正交试验的方法对四级电枢的过盈量、尾翼宽度、尾翼厚度和过盈长度4个过盈结构参数进行了综合优化。结果表明，采用过盈量2 mm、尾翼宽度140 mm、尾翼厚度40 mm、过盈长度270 mm的优水平组合能够使发射前期电枢和轨道间接触特性更理想，可为四级电枢结构设计提供参考。
- 四级电磁轨道发射 /
- 过盈配合 /
- 接触特性 /
- 正交试验 /
- 有限元分析 /
- 参数优化
Abstract: To promote the application of quadrupole electromagnetic orbital launcher in ground-to-air missile launching, the interference structure of quadrupole armature was studied. On the basis of finite element software ANSYS Workbench and its 3D interference fit simulation, with four evaluation indexes-maximum equivalent stress, coefficient of contact area, uniformity coefficient of contact pressure and coefficient of relative contact pressure-selected to describe the contact characteristics, the four interference structure parameters of quadrupole armature (interference amount and length, tail width and thickness) were optimized comprehensively by orthogonal experiment. The results show that the optimal combination of 2 mm interference amount, 140 mm tail width, 40 mm tail thickness and 270 mm interference length can make the contact characteristics between armature and rail ideal in the early stage of launch, which can be used as a reference for the design of quadrupole armature structure.
- quadrupole electromagnetic orbital transmitter /
- interference fit /
- contact characteristics /
- orthogonal experiment /
- finite element analysis /
- parameter optimization

HTML全文

图 1 四级轨道发射器模型

Figure 1. Quadrupole rail launcher model

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图 2 四级磁场分析模型

Figure 2. Quadrupole magnetic field analysis model

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图 3 四级电枢模型

Figure 3. Quadrupole armature model

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图 4 仿真模型

Figure 4. Simulation model

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图 5 电枢网格划分模型

Figure 5. Meshed model of the armature

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图 6 等效应力分布

Figure 6. Distribution of equivalent stress

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图 7 接触压强分布

Figure 7. Distribution of contact pressure

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图 8 试验指标线状图

Figure 8. Linear graph of experiment index

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图 9 优水平等效应力分布

Figure 9. Optimal distribution of equivalent stress

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图 10 优水平接触压强分布

Figure 10. Optimal distribution of contact pressure

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表 1 试验指标计算方式

Table 1. Calculation method for experiment index

code	experiment index	calculation method
1	maximum equivalent stress σ	obtained by simulation
2	coefficient of contact area S₁	S₁=A₁/A₀
3	uniformity coefficient of contact pressure S₂	S₂=A₂/A₁
4	coefficient of relative contact pressure p	p=p₀/p_m

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表 2 参数水平

Table 2. Parameter levels

	interference amount a/mm	tail width b/mm	tail thickness c/mm	interference length l/mm
level 1	2	140	40	230
level 2	3	160	50	250
level 3	4	180	60	270

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表 3 正交试验方案及结果记录

Table 3. Scheme and results of orthogonal experiment

experiment code	a/mm	b/mm	c/mm	l/mm	σ/MPa	S₁	S₂	p
1	2	140	40	230	122.13	0.518 2	0.150 8	0.339 1
2	2	160	50	250	124.66	0.564 8	0.121 9	0.353 0
3	2	180	60	270	126.27	0.590 1	0.106 6	0.339 5
4	3	160	40	270	190.15	0.531 7	0.160 4	0.396 8
5	3	180	50	230	183.60	0.485 1	0.126 8	0.269 6
6	3	140	60	250	189.81	0.589 7	0.155 8	0.415 6
7	4	180	40	250	247.49	0.474 7	0.140 7	0.325 6
8	4	140	50	270	255.55	0.575 9	0.197 7	0.444 8
9	4	160	60	230	249.75	0.455 7	0.177 1	0.322 3

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表 4 对最大等效应力的影响

Table 4. Influence of combination of parameters on maximum equivalent stress

optimal combination	$ \overline{\sigma_1}$/MPa	$ \overline{\sigma_2}$/MPa	$ \overline{\sigma_3}$/MPa	R/MPa
a=2 mm	124	188	251	127
b=180 mm	189	188	186	3
c=40 mm	187	188	189	2
l=230 mm	185	187	191	6
influence degree: a≫l > b > c

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表 5 对接触面积系数的影响

Table 5. Influence of combination of parameters on coefficient of contact area

optimal combination	$ \overline{S_{1,1}}$	$ \overline{S_{1,2}}$	$ \overline{S_{1,3}}$	R
a=2 mm	0.558	0.536	0.502	0.056
b=140 mm	0.561	0.517	0.516	0.045
c=60 mm	0.508	0.542	0.545	0.037
l=270 mm	0.486	0.543	0.566	0.080
influence degree: l > a > b > c

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表 6 对接触压强均匀系数的影响

Table 6. Influence of combination of parameters on uniformity coefficient of contact pressure

optimal combination	$ \overline{S_{2,1}}$	$ \overline{S_{2,2}}$	$ \overline{S_{2,3}}$	R
a=4 mm	0.126	0.148	0.172	0.046
b=140 mm	0.168	0.153	0.125	0.043
c=40 mm	0.151	0.149	0.147	0.004
l=270 mm	0.152	0.139	0.155	0.016
influence degree: a≥b > l > c

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表 7 对相对接触压强系数的影响

Table 7. Influence of combination of parameters on coefficient of relative contact pressure

optimal combination	$ \overline{P_1}$	$ \overline{P_2}$	$ \overline{P_3}$	R
a=4 mm	0.344	0.361	0.364	0.020
b=140 mm	0.400	0.357	0.312	0.087
c=60 mm	0.354	0.356	0.359	0.005
l=270 mm	0.310	0.365	0.394	0.084
influence degree: b≥l > a > c

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表 8 优水平试验记录

Table 8. Results of better level experiment

experiment code	a/mm	b/mm	c/mm	l/mm	σ/MPa	S₁	S₂	p
10	2	140	40	270	127.61	0.524 6	0.180 9	0.442 9

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