﻿ 轨道炮复合身管纤维缠绕封装结构优化设计及预应力模拟
 高压物理学报   2018, Vol. 32 Issue (5): 055107.  DOI: 10.11858/gywlxb.20170594.

## 引用本文 [复制中英文]

[复制中文]
XIAO Hongcheng, YIN Dongmei, LIN Qinghua, LI Baoming. Structural Optimum Design and Pre-stress Simulation of Fiber Housing for Railgun[J]. Chinese Journal of High Pressure Physics, 2018, 32(5): 055107. DOI: 10.11858/gywlxb.20170594.
[复制英文]

### 文章历史

( 南京理工大学瞬态物理国家重点实验室, 江苏 南京 210094 )

 图 1 轨道炮身管模型 Fig.1 Model of railgun barrel

1 纤维铺层优化设计 1.1 整体内膛的轮廓设计

1.2 纤维缠绕层设计

 图 2 50 mm圆口径轨道炮身管截面 Fig.2 Sectional view of 50 mmcircular bore railgun barrel
1.2.1 各缠绕层厚度

 $m = f({h_1}, {h_2}, {h_3}, {h_4})$ (1)

 $\left\{ \begin{array}{l} a \le {h_1} \le 6, \;\;\;b \le {h_4} \le 8, \;\;\;h = {h_1} + {h_2} + {h_3} + {h_4} \le {H_0}\\ S \ge 1.2, \;\;\;{f_{c, k}} \le 0.6, \;\;\;\delta \le C, \;\;\;\omega \le D \end{array} \right.$ (2)

1.2.2 各子层缠绕角及层叠次序优化

 图 3 50 mm圆口径复合身管材料及缠绕工艺参数(1/4模型) Fig.3 Material properties and processing parameters for 50 mm circular bore barrel (1/4 model)
2 整体内膛预应力模拟 2.1 预应力数值方法

 ${\varepsilon _{\rm{L}}} = \Delta T{a_{\rm{L}}} = {\sigma _{\rm{L}}}/{E_{\rm{L}}}$ (3)

2.2 张力制度优化结果与讨论

 图 4 圆口径身管网格划分细节 Fig.4 Feature of mesh for the circular bore barrel

 图 5 两种状态约束下张力优化结果曲线 Fig.5 Optimization results of tension force under two different constraints of state variables

 图 6 Ⅰ型状态约束身管发射前及发射时环向应力分布 Fig.6 Hoop stress distribution of barrel under type Ⅰ constraints before and during launch

 图 7 Ⅰ型状态约束身管路径(见图 4)应力 Fig.7 Stress distribution of barrel along thepath (see Fig.4) under type Ⅰ constraints

 图 8 Ⅱ型状态约束身管发射前及发射时环向应力分布 Fig.8 Hoop stress distribution of barrel under type Ⅱ constraints before and during launch

 图 9 Ⅱ型状态约束身管路径(见图 4)应力 Fig.9 Stress distribution of barrel along thepath (see Fig.4) under type Ⅱ constraints

3 结论

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Structural Optimum Design and Pre-stress Simulation of Fiber Housing for Railgun
XIAO Hongcheng , YIN Dongmei , LIN Qinghua , LI Baoming
( National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China )
Abstract: The structural optimization design of filament winding housing for a railgun barrel is introduced.The thickness of fiber laminates, the winding angle and the stacking sequence of fibers for a 50 mm circular bore composite barrel are investigated for structural optimization.Numerical simulation of railgun prestressing has been studied based on continuous solution with birth-death element method.By using a method of stepwise optimization of multi-variable based on random search, the tension profile of fibers is optimized.Optimization of state variables under two different constraints is analyzed and initial stress field and superposition stress field of the prestressed barrel are given.The second type of optimization results show that the profile in this study can meet design requirements of the composite barrel.
Keywords: railgun    composite barrel    random search    tension profile