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首页> 外文会议>Prognostics and System Health Management Conference >Fatigue Life Analysis of Liquid-Filled Pipeline Under the Combined Excitation of Random Vibration and Fluid-Structure Interaction
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Fatigue Life Analysis of Liquid-Filled Pipeline Under the Combined Excitation of Random Vibration and Fluid-Structure Interaction

机译：随机振动与流固耦合共同激励下的充液管道疲劳寿命分析

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摘要

The objective of this article is aiming at the fatigue problem of the liquid-filled pipeline, which is under the combined excitation of the external complex random loads and the internal fluid-structure interaction vibration caused by the high-pressure and high-speed fluid in the pipeline. By means of theory analysis and simulation, the combined excitation of the liquid-filled pipeline under the complex random load and fluid-structure interaction vibration was studied, and the calculation method of pipeline fatigue life under the combined excitation was given. Based on this, taking the typical ship liquid-filled pipeline as research object, ANSYS Workbench finite element simulation software was used to analyze the pipeline fatigue life under the combined excitation of random vibration and fluid-structure interaction vibration. All these conclusions can provide references for the anti-fatigue design and service life assessment of the ship's pipeline structure.
机译：本文的目的是针对充液管道的疲劳问题，该问题是由外部复杂随机载荷和由高压和高速流体引起的内部流固耦合振动共同激发的。管道。通过理论分析和仿真，研究了复杂随机载荷和流固耦合振动作用下充液管道的联合激励，给出了联合激励下管道疲劳寿命的计算方法。在此基础上，以典型的船舶液体填充管道为研究对象，利用ANSYS Workbench有限元模拟软件分析了随机振动和流固耦合振动共同激励下的管道疲劳寿命。这些结论可为船舶管道结构的抗疲劳设计和使用寿命评估提供参考。

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