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论文:2021,Vol:39,Issue(5):1150-1157 |
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引用本文： |
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龚军军, 富威, 左沅昊, 马佳瑞, 丁和平. 基于相似理论的舰炮托架振动特性相似性研究[J]. 西北工业大学学报 |
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GONG Junjun, FU Wei, ZUO Yuanhao, MA Jiarui, DING Heping. Research on the similarity of vibration characteristics of naval gun bracket based on similarity theory[J]. Northwestern polytechnical university |
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| 基于相似理论的舰炮托架振动特性相似性研究 |
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| 龚军军, 富威, 左沅昊, 马佳瑞, 丁和平 |
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| 哈尔滨工程大学 机电工程学院, 黑龙江 哈尔滨 150001 |
| 摘要: |
| 采用相似比例模型实验可以为舰炮武器研发提供一定的参考。以舰炮托架为例进行说明。通过量纲分析法、方程分析法以及有限单元法建立了托架原模型和缩比模型之间的模态参数相似关系，设计了缩比尺寸为1∶2的托架实验模型，进行了数值仿真与实验验证。结果表明：基于相似关系预估原模型的固有频率与有限元数值仿真的结果相比误差在2%以内，与实验结果相比误差在10%以内；缩比模型与原模型的振型较为接近。证明文中理论方法是可行的，具有工程实用性。因此可以通过分析托架缩比模型的振动特性来预估原模型的振动特性，为舰炮设计人员提供了参考。 |
| 关键词:
舰炮
托架
振动特性
相似理论
模型实验
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| Research on the similarity of vibration characteristics of naval gun bracket based on similarity theory |
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| GONG Junjun, FU Wei, ZUO Yuanhao, MA Jiarui, DING Heping |
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| College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China |
| Abstract: |
| The similar scale model experiment can provide some reference for the research and development of naval gun weapons. This paper takes the naval gun bracket as an example to explain. Based on the dimensional analysis, equation analysis and finite element method, the modal parameter similarity relationship between the original model for bracket and the shrinkage ratio model is established. The results show that the error of predicting the natural frequency of the original model based on similarity relation is less than 2% comparing with the results of finite element numerical simulation, and the error is less than 10% comparing with the experimental results, and the mode of shrinkage model is close to that of the original model. It is proved that the theoretical method in this paper is feasible and practical in engineering. Therefore, the vibration characteristics of the original model can be estimated by analyzing the vibration characteristics of the carrier shrinkage ratio model, which provides a reference for ship gun designers. |
| Key words:
naval gun
bracket
vibration characteristics
similarity theory
model test
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| 收稿日期: 2021-01-19
修回日期:
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| DOI: 10.1051/jnwpu/20213951150 |
| 通讯作者: 富威(1975-),哈尔滨工程大学副教授、博士,主要从事舰炮设计理论和振动冲击抑制方法研究。e-mail:fuwei@hrbeu.edu.cn
Email：fuwei@hrbeu.edu.cn |
| 作者简介: 龚军军(1993-),哈尔滨工程大学硕士研究生,主要从事舰炮振动抑制方向研究。
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