Instability of simply supported pipes conveying fluid under thermal loads

Instability of simply supported pipes conveying fluid under thermal loads
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热载荷下输送流体的简支管道的不稳定性

DOI:
10.1016/j.mechrescom.2008.09.011
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发表时间:
2009-04
影响因子:
2.4
通讯作者:
Qian, Q.
Qian, Q.
中科院分区:
工程技术4区
文献类型:
--
作者:
Ni, Q.;Wang, L.;Qian, Q.

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本文研究了热载荷作用下简支输流管道的失稳问题。应用汉密尔顿原理,导出了管道在线性和非线性应力-温度作用下的运动方程。本文采用微分求积法(DQM)计算了两端铰支输流管道的流场。样本结果与不同的系统参数值的几种情况下。得出了热载荷对输流管道稳定性影响的一些结论。
In this paper, the instability of simply supported pipes conveying fluid under thermal loads is studied. By applying the Hamilton’s principle, the equation of motion is derived for the pipe with the effects of both linear and non-linear stress–temperature cases. The differential quadrature method (DQM) has been utilized in computing the results for the pinned–pinned pipe conveying fluid. Sample results are presented for several cases with varying values of the system parameter. Some conclusions are drawn on the effect of the thermal loads on the stability of pipes conveying fluid.
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