Song, Gangbing2019-02-212019-02-21December 22013-12December 2https://hdl.handle.net/10657/3926This thesis, for the first time, studies experimental vibration control of pipe like structures submerged in water by using a Pounding Tuned Mass Damper (PTMD). The PTMD is a novel damper that was recently invented in the Smart Materials and Structures Laboratory at the University of Houston. This new damper innovatively uses collision/impact with viscoelastic materials to dissipate vibration energy. To facilitate the experimental study, a particular submerged vibrating system consisting of four springs and a short-pipe to mimic a jumper was designed. A method to estimate the natural frequencies of a submerged structure was proposed and experimentally verified. Therefore, a PTMD was designed and fabricated to control the vibration of the submerged system. Extensive experimental results clearly demonstrated the effectiveness of the PTMD in vibration mitigation of a submerged structure. Moreover, the submerged PTMD is robust with respect to the natural frequency variation of the structure to be controlled.application/pdfengThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).Offshore JumpersVibration controlPounding tuned mass damper (PTMD)Vortex Induced Vibration2019-02-21Thesisborn digital