| 导弹静水模态的ANSYS有限元分析 |
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| 引用本文： | 仲维国,张嘉钟.导弹静水模态的ANSYS有限元分析[J].强度与环境,2004,31(1):17-21. |
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| 作者姓名： | 仲维国 张嘉钟 |
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| 作者单位： | 哈尔滨工业大学航天学院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 哈尔滨工业大学跨学科交叉性基金资助项目(HIT.MD2000.04) |
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| 摘 要： | 为研究导弹潜航时的自振特性，采用通用有限元软件ANSYS建立了适合浸没圆柱壳的有限元模型，用ANSYS结构模态分析的非对称法分析了导弹结构的静水模态。结果显示静水模态的固有频率比干模态有较大下降，振型类似；尾舵和水深对模态的影响不大。
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| 关 键 词： | 潜射导弹 ANSYS 有限元分析 静水模态 强度 应变响应 |
| 文章编号： | 1006-3919(2004)01-0017-05 |
| 修稿时间： | 2003年4月7日 |
Finite element analysis of missile's calm-water modes using ANSYS |
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| ZHONG Wei-guo,ZHANG Jia-zhong.Finite element analysis of missile''''s calm-water modes using ANSYS[J].Structure & Environment Engineering,2004,31(1):17-21. |
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| Authors: | ZHONG Wei-guo ZHANG Jia-zhong |
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| Abstract: | To study submerging missile's free-vibration characteristic,an FEM model adapting to submeerged cylindrical shell was built with general FEM software-ANSYS, and the missile's calm-water modes were analyzed using the unsymmetrical method in ANSYS structural modal analysis. Results demonstrate that the natural frequency of calm-water modes is much lower than dry modes', but the mode shape is similar. And the influence of controlpiston and depth on modes is very little. In contrast to wet-mode method based on finite-element added-mass of liquid, this skill is more competent for complicated submerged structure's modal analysis. |
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| Keywords: | fluid-structure interaction modal analysis finite element method |
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