Parameter sensitivity and resonance reliability of a fluid-filled pipeline

Here in, the parameter sensitivity and resonance reliability of a fluid-filled pipeline was studied. Considering fluid-structure interaction(FSI), using FEM software, a fluid-filled pipeline system was modeled and the system's modal analysis was done. Then, random distribution patterns of the pipe structure parameters were given, and the probability distributions of the first and second modes were analyzed, and the influences between these parameters and the pipeline system's natural frequency sensitivity were also discussed. Finally, the interference theory was used to perfrom the FSI pipeline system's anti -resonance reliability analysis. The results could help anti -resonance design and reliability estimation for fluid-filled pipelines.