| 双跨换热器传热管在静水中阻尼特性的研究 |
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| 引用本文： | 张文清,胡效.双跨换热器传热管在静水中阻尼特性的研究[J].核动力工程,1989,10(4):47-54. |
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| 作者姓名： | 张文清 胡效 |
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| 作者单位： | 西安交通大学，西安交通大学，西安交通大学 西安，西安 北京机械委机械研究院，西安 |
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| 摘 要： | 本文对双跨换热器传热管在静水中的结构阻尼与粘滞阻尼作了简介,并对在总阻尼中占主导地位的挤压膜阻尼作了较深入的讨论。Mulcahy 于80年代初提出的挤压膜阻尼数学模型是较为完善的,其缺陷是未计入管子振幅的影响,本文对它进行了修正。为了验证理论分析的结果,笔者对双跨传热管在静水中的挤压膜阻尼作了实验研究,得出挤压膜阻尼与中间支承板厚度、管子-中间支承板间隙以及管子振幅之间的关系。
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| 关 键 词： | 换热器 阻尼 挤压膜 振幅 传热管 |
Study of Damping Character for Twospan Heat Exchanger Tube in Static Water |
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| Zhang Wenqing.Study of Damping Character for Twospan Heat Exchanger Tube in Static Water[J].Nuclear Power Engineering,1989,10(4):47-54. |
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| Authors: | Zhang Wenqing |
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| Affiliation: | Zhang Wenqing(Xian Jiaotong University)Hu Xiao(Beijing Mechanical Research Institute)Qiao Zhongliang(Xian Jiaotong University) |
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| Abstract: | This paper presents structural damping and viscous damping of two-span heat exchanger tube in static water.Squeeze film damping which is dominant in total damping is diseussed.A squeeze film damping mathematical model was posed by Mulcahy(1980).This model is perfect relatively,but an influence of amplitude was neglected.The Mulcahy model is improved.The experiment study of heat exchanger tube squeeze film damping is carried out in order to examine the result of theoretical analysis.The rela-tionships between squeeze film damping and support plant thickness,squeeze film damping and tube-support clearance and squeeze film damping and vibration amplitude are obtained. |
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| Keywords: | Damping Squeeze film Vibration amplitude Heat exchangertube |
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