Study on the Vibration Displacement of Hydraulic Pipeline System Excited by Fluid Impact

Abstract Hydraulic impact had an effect on pipeline vibration displacement, so it was important to study the external lateral periodic force fluid-structure coupling displacement of hydraulic pipeline. Based Bernoulli beam model, equation flexible established by analyzing stress under action internal flow. The system simulated whether subject force. displacement-time curves in x, y and z directions monitoring points pipelines were obtained, maximum different pressure obtained. simulation results shown that increased total middle section decrease continuously, then they tend stabilize after a period attenuation. value X-direction point part 9.5 e −5 m , stable at 0.135 s . y-displacement 3.1 −4 m, 0.2 1.32e-4 0.36 3.35 0.43 Increasing pressure, vibrations larger, attenuation values faster. research provide reference for prevent shock reduce vibration.