充液管路液压系统广泛应用于舰船、车床、制冷等大型运输系统上,由于管子的振动效果是充液流动情况所致,对其研究需要借助于流固耦合理论。本文针对线性充液管路,在有限元理论的基础上建立振动的流固耦合模型,研究对称布局限制下的管路振动模态及Von Misses应力分布情况,重点分析充液管路长度对压力波动的影响。结果表明:卡箍设置处能够明显减弱振幅,越远离卡箍设置处振动效果越明显,共振情况随着振动频率的增加明显得到加强;应力最大点只要布局在管子内部。压力变化是液压作用的宏观表现,波动的曲线反应出充液过程是一个复杂的作用过程,尽量选择布置长度较短的充液管路。 Liquid-filled hydraulic system is widely used in ships, lathes, refrigeration and other large transport systems, due to the vibration effect of the tube is caused by liquid-filled flow, its research needs to be based on fluid-solid coupling theory. In this paper, the fluid-solid coupling model of vibration is established based on the finite element theory and the vibrational modes and Von Misses stress distribution of the pipeline under symmetrical layout are analyzed in this paper. The length of the liquid- The impact of volatility. The results show that the amplitude of the clamp can be significantly reduced. The more obvious the vibration effect is, the greater the vibration frequency is. The maximum stress is only arranged inside the pipe. The pressure change is a macroscopic manifestation of the hydraulic action. The fluctuating curve reflects that the filling process is a complicated process. Try to choose a short filling liquid pipe.