| 换热管固有频率计算方法 |
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| 引用本文： | 苏文献,陈功. 换热管固有频率计算方法[J]. 上海理工大学学报, 2015, 37(6): 535-539,545 |
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| 作者姓名： | 苏文献 陈功 |
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| 作者单位： | 上海理工大学 能源与动力工程学院, 上海 200093;上海理工大学 能源与动力工程学院, 上海 200093 |
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| 摘 要： | 采用有限元分析软件ANSYS计算某管壳式换热器的换热管的固有频率,将其计算结果与采用相关标准(GB 151-1999和TEMA)和经验公式(Macdaff-Felga法)计算得到的固有频率结果进行分析比较.结果表明,采用有限元法计算得到的固有频率与采用GB 151-1999标准以及Macdaff-Felga法的计算结果保持一致,采用TEMA标准计算的固有频率结果小于采用其他几种方法计算的结果.另外,有限元法的计算结果显示,折流板的一阶频率在管子的一阶频率和二阶频率之间.
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| 关 键 词： | 管壳式换热器 固有频率 经验公式 有限元法 |
| 收稿时间： | 2014-05-16 |
Method of Computing Natural Frequencies of Tube |
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| SU Wenxian and CHEN Gong. Method of Computing Natural Frequencies of Tube[J]. Journal of University of Shanghai For Science and Technology, 2015, 37(6): 535-539,545 |
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| Authors: | SU Wenxian and CHEN Gong |
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| Affiliation: | School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
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| Abstract: | Finite element software ANSYS was used to calculate the natural frequency of tube in a shell and tube heat exchanger.The calculation result was compared with the analytical results by using the related standards (GB 151-1999 and TEMA) and empirical formula (Macdaff-Felga).The natural frequency of tube calculated by the finite element method is consistent with those calculated by GB 151-1999 and Macdaff-Felga,and the frequency calculated by TEMA is smaller compared with those calculated by other methods.The finite element computation also shows that the first mode of baffle lies between the first mode and the second mode of tube. |
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| Keywords: | shell and tube heat exchanger natural frequencies empirical formula finite element method |
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