Dynamical stability of cantilevered pipe conveying fluid in the presence of linear dynamic vibration absorber | ||
| Journal of Computational Applied Mechanics | ||
| مقاله 20، دوره 50، شماره 1، 2019، صفحه 182-190 اصل مقاله (1.77 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/jcamech.2019.276606.365 | ||
| نویسندگان | ||
| ZhiYuan Liu1، 2؛ Kun Zhou1، 2؛ Lin Wang* 1، 2؛ TianLi Jiang1، 2؛ HuLiang Dai1، 2 | ||
| 1Department of Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China | ||
| 2Hubei Key Laboratory for Engineering Structural Analysis and Safety Assessment, Wuhan 430074, China | ||
| چکیده | ||
| When the velocity of fluid flow in a cantilevered pipe is successively increased, the system may become unstable and flutter instability would occur at a critical flow velocity. This paper is concerned with exploring the dynamical stability of a cantilevered fluid-conveying pipe with an additional linear dynamic vibration absorber (DVA) attachment. It is endeavoured to show that the stability of the pipe may be considerably enhanced due to the presence of DVA. The quasi-analytical results show that the energy transferred from the flowing fluid to the pipe may be partially transferred to the additional mass. In most cases, thus, the critical flow velocity at which the pipe becomes unstable would become larger, meanwhile the flutter instability of the DVA is not easy to achieve. In such a fluid-structure interaction system, it is also found that flutter instability may first occur in the mode of the DVA. The effects of damping coefficient, weight, location and spring stiffness of the DVA on the critical flow velocities and nonlinear oscillations of the system have also been analyzed. | ||
| کلیدواژهها | ||
| Pipe conveying fluid؛ Linear dynamic vibration absorber؛ Stability؛ Critical flow velocity؛ Nonlinear oscillation | ||
| مراجع | ||
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