Passive Vibration Control of Pipes Conveying Fluid with Parallel Nonlinear Energy Sinks

Abstract

Excessive vibration energy of the pipes conveying fluid could be dissipated by nonlinear targeted energy transfer. The parallel nonlinear energy sink devices were attached to the pipe for absorbing the vibration energy. Galerkin method was utilized to discretize the equation of the integrated translating pipe-NES system derived from Newton’s second law. The numerical simulation was applied to show the vibration suppression effect. Results showed that the parallel NES could effectively dissipate the vibration of the pipes conveying fluid. Compared with the single NES under the same condition, the parallel NES not only owns less mass but also better dissipated effect.