基于模态分析的三脚架外摇架体优化设计 |
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引用本文: | 李博昊.基于模态分析的三脚架外摇架体优化设计[J].兵工自动化,2019,38(5). |
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作者姓名: | 李博昊 |
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作者单位: | 南京理工大学机械工程学院,南京,210094 |
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摘 要: | 为解决重机枪三脚架外摇架体刚度薄弱的问题,对三脚架外摇架体进行优化设计。根据改进后的简化模
型,对其进行自由模态分析和约束模态分析,从轻量化设计的角度出发,在外摇架体结构优化及壁厚改进的基础上,
给出一种既可以减轻外摇架体质量又可以提高三脚架整体固有频率的外摇架体设计方案。对比分析结果表明,该设
计方案使三脚架整体的固有频率明显提高。
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关 键 词: | 模态仿真 固有频率 结构优化 |
收稿时间: | 2018/12/11 0:00:00 |
修稿时间: | 2019/1/20 0:00:00 |
Optimal Design of External Shake Frame of Tripod Based on Modal Analysis |
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Abstract: | In order to solve the problem of weak stiffness of the external cradle body of the heavy machine gun tripod,
the external cradle body of the tripod is optimized. According to the improved simplified model, the free mode analysis and
constrained modal analysis are carried out. From the light weight design point of view, the structure optimization and wall
thickness improvement of the outer rocking frame are carried out. This paper presents a design scheme of external rocking
frame which can not only reduce the mass of the external frame but also increase the integral natural frequency of the tripod.
The results show that the natural frequency of tripod is improved obviously. |
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Keywords: | modal simulation natural frequency structural optimization |
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