Vibration characteristic sensitivity analysis based on finite element for ultra-high pressure pipeline systems

A basic idea of pipeline system dynamic modification was proposed. With it, the pipeline vibration characteristic analysis method based on finite element was combined with the dynamic modification technology based on sensitivity analysis. Correlation coefficient was introduced to conduct sensitivity numerical calculations, so the complex structures' dynamic characteristics sensitivity analysis was made possible. An outlet pipeline system with ultra-high pressure was taken as an example for a sensitivity analysis, the results showed that the position and form of a pipeline support can obviously effect the system vibration characteristics.