| 弹性支承输流管道的动力学特性 |
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| 引用本文： | 包日东,冯颖,毕文军. 弹性支承输流管道的动力学特性[J]. 机械设计与制造, 2010, 0(3) |
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| 作者姓名： | 包日东 冯颖 毕文军 |
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| 作者单位： | 沈阳化工学院,沈阳,110142 |
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| 基金项目： | 辽宁省高等学校科研项目(2008568);;沈阳化工学院博士科研启动基金(200815) |
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| 摘 要： | 研究两端弹性支承输流管道横向振动的动力学特性。根据梁模型横向弯曲振动模态函数,由两端弹性支承的边界条件得到其模态函数的一般表达式。根据特征方程具体分析弹性支承刚度、质量比、流体压力和流速、管截面轴向力等主要参数对管道固有特性及失稳临界流速的影响。数值计算结果表明,管道固有频率随弹性支承刚度、管截面轴向拉力的增加而增大,随流体流速、流体压强和管截面轴向压力的增加而下降;静态失稳临界流速则随弹性支承刚度、流体压强、管截面轴向压力的增加而下降,随管截面轴向拉力的增加而上升。
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| 关 键 词： | 弹性支承 输流管道 固有频率 失稳临界流速 动力学特性 |
Dynamic characteristics of pipeline conveying fluid with elastic supports |
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| BAO Ri-dong,FENG Ying,BI Wen-jun. Dynamic characteristics of pipeline conveying fluid with elastic supports[J]. Machinery Design & Manufacture, 2010, 0(3) |
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| Authors: | BAO Ri-dong FENG Ying BI Wen-jun |
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| Affiliation: | Shenyang Institute of Chemical Technology/a>;Shenyang 110142/a>;China |
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| Abstract: | The dynamic characteristics of pipe conveying fluid with both ends supported elastically was investigated. The expression of vertical vibration mode-function of pipeline supported elastically on two ends was derived from the boundary condition of elastic supported beam. The effect of supporting elas- tic coefficient,mass ratio,fluid pressure,flowrate,and axial force of pipe section on natural characteristics and critical instability flowrate was calculated and analyzed based on the eigenequation of motion. ... |
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| Keywords: | Elastic supports Pipe conveying fluid Natural frequency Critical instability flowrate Dynamic characteristics |
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