火炮立楔式炮闩抽筒系统的动态特性

胡胜海; 张满慧; 富威; 刘秀莲

doi:10.11883/1001-1455(2017)02-0221-08

火炮立楔式炮闩抽筒系统的动态特性

doi: 10.11883/1001-1455(2017)02-0221-08

哈尔滨工程大学机电工程学院, 黑龙江哈尔滨 150001

基金项目:

国家自然科学基金项目 51175099

详细信息

作者简介:
胡胜海(1954—)，男，教授，博士生导师

通讯作者:
张满慧，zhangmanhui@hrbeu.edu.cn

中图分类号: O389;O313
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- 被引次数: 0
出版历程
- 收稿日期: 2015-09-17
- 修回日期: 2015-12-16
- 刊出日期: 2017-03-25

Dynamic characteristics of extractor system in artillery vertical wedge breechblock

College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, Heilongjiang, China

摘要

摘要: 针对火炮立楔式炮闩抽筒系统中的卡壳和构件动态断裂等抽筒故障，以动力学理论为基础，将其转化为系统动态特性的定量研究。分析了抽筒系统的工作机理并建立了连续接触动力学模型，定量地推导出药筒及系统内接触构件的运动规律和碰撞载荷。建立了杠杆式抽筒子在抽筒过程中的弹性波动模型，采用该模型能够定量地得出抽筒子的动应力分布和力学参数的影响。进行了理想抽筒工况下理论模型的数值计算和实体模型的仿真模拟，同组比较结果验证了定量分析模型的合理性。所建模型可为解决抽筒故障提供理论依据，也可为抽筒系统的动力学和结构优化设计作铺垫。
- 动态特性 /
- 非线性动力学 /
- 连续接触 /
- 弹性波动 /
- 抽筒系统
Abstract: Aimed at the faults such as cartridge jamming and component dynamic fracture in the extractor system of an artillery vertical wedge breechblock, this paper was focused on transforming the extracting fault analysis to the quantitative study of the system dynamic characteristics based on the nonlinear dynamics theory. The working mechanism of the extractor system was analyzed firstly, and then a continuous contact dynamics model was established for deriving out the motion law of any components and the impact loads quantificationally during the extraction process. Moreover, the elastic wave model of the lever-type extractor was established, which can both describe the dynamic stress distribution and achieve the influences of the mechanical parameters of the extractor by the quantitative form. The numerical calculation of those theoretical models and the simulations of the virtual prototype were both conducted on the ideal extracting condition. The comparison results of the same group show that the quantitative analysis dynamic models are reasonable and effective, which provides a theoretical basis for the solution of the extracting fault and the dynamics optimization of the extractor system.
- dynamic characteristics /
- nonlinear dynamics /
- continuous contact /
- elastic wave /
- extractor system

HTML全文

图 1 半自动立楔式炮闩

Figure 1. Schematics of a semi-automatic vertical wedge breechblock

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图 2 抽筒系统的平面运动机理

Figure 2. Planar operational principle of the extractor system

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图 3 抽筒系统的力学模型

Figure 3. Mechanics model of extractor system

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图 4 杠杆式抽筒子的三维及其简化平板结构

Figure 4. Three-dimensional and flat plate structure of the level-type cartridge extractor

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图 5 抽筒阻力的变化规律

Figure 5. Extraction resistance varying with time

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图 6 接触力的变化规律

Figure 6. Contact forces varying with time

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图 7 抽筒系统的实体仿真模型及药筒的动态响应

Figure 7. Physical model of the extractor system and dynamic response of the cartridge case

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图 8 抽筒子轮廓边界的最大动应力分布

Figure 8. Maximum dynamic stress in the contour boundary of the cartridge extractor

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图 9 抽筒子上动应力幅值的变化规律

Figure 9. Dynamic stress varying with time for the appointed positions in the cartridge extractor

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图 10 抽筒子二维和三维结构的最大动应力分布

Figure 10. Maximum dynamic stress distributions for the two-dimensional and three-dimensional structures of the cartridge extractor

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