| 输液管道附加支承刚度优化设计 |
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| 引用本文： | 王栋,李正浩,任建亭.输液管道附加支承刚度优化设计[J].计算力学学报,2016,33(6):851-855. |
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| 作者姓名： | 王栋 李正浩 任建亭 |
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| 作者单位： | 1. 西北工业大学航空学院,西安,710072;2. 西北工业大学振动工程研究所,西安,710072 |
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| 基金项目： | 国家自然科学基金（51371146）；航天技术支撑基金（2014-HT-XGD）资助项目. |
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| 摘 要： | 研究液固耦合效应作用下,两端铰支输液管道系统附加支承的刚度和位置优化设计。应用有限元分析方法,建立了输液管道液固耦合振动方程。为有效控制管道结构的振动,利用在管道结构上附(增)加支承的方法,提高输液管道系统的固有频率,预防系统可能发生强烈的耦合振动导致不稳定状态。提出了附加支承最小(临界)刚度的快速计算策略和途径,分别探讨分析了输液管道内液体的流速、附加支承的位置以及第一阶固有频率的目标值对最优支承刚度值的影响。
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| 关 键 词： | 输液管道 液固耦合振动 优化支承设计 固有频率 最小支承刚度 |
| 收稿时间： | 2015/6/18 0:00:00 |
| 修稿时间： | 2015/9/7 0:00:00 |
Optimal stiffness design of additional support for fluid-conveying pipe including fluid-structure interaction |
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| WANG Dong,LI Zheng-hao,REN Jian-ting.Optimal stiffness design of additional support for fluid-conveying pipe including fluid-structure interaction[J].Chinese Journal of Computational Mechanics,2016,33(6):851-855. |
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| Authors: | WANG Dong LI Zheng-hao REN Jian-ting |
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| Affiliation: | School of Aeronautics, Northwestern Polytechnical University, Xi''an 710072, China;School of Aeronautics, Northwestern Polytechnical University, Xi''an 710072, China;Institute of Vibration Engineering, Northwestern Polytechnical University, Xi''an 710072, China |
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| Abstract: | The design optimization of an additional elastic support is performed for the fluid-conveying pipe with the fluid-structure interaction by use of the finite element analysis method.In order to mitigate the dynamic response of the pipe system containing flowing liquid and to prevent it from the possible resonance with the pressure variation of the liquid conveyed,an intermediate lateral point support is applied for control of the natural frequency of the system.An efficient way is proposed for quick estimate of the minimum or critical stiffness of the support required for the objective frequency of the system.A straight uniform tubular pipe with both ends pinned is utilized for investigation of the effects of the desired fundamental natural frequency,flow velocity of the liquid and the support position upon the minimum stiffness of the intermediate support,respectively. |
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| Keywords: | fluid-conveying pipe fluid-structure interaction optimal support design natural frequency minimum support stiffness |
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