There are numerous ways to realize vibration absorbers. In thisstud y, a new method is proposed wherein an elastomeric lattice is used. The geometrical configuration of the lattice is designed such that it transfers energy from the main system and is dissipated by the inherent material damping of the lattice material. The applicability of this system is numerically evaluated for pipelines by using two simple lattices whose geometries were optimized and the performances under harmonic loads compared with that of the theoretical optimal TMD. Eventhough they were capable of reducing the vibrations significantly, it was found to be less efficient at small mass ratios while at large mass ratios, the lattices performed similar to the theoretical optimal TMD. Nevertheless, in order to use such systems for pipelines or pipeline like structures such as chimneys, further studies are required using improved lattice configurations that can work efficiently for the whole range of mass ratios.

A Resonating Lattice TMD to Reduce Pipeline Vibrations / MURUGAN JAYA, Mahesh; Ceravolo, Rosario; Matta, Emiliano; Luca Zanotti Fragonara,. - ELETTRONICO. - Paper ID - PVP2018-84377:(2018). (Intervento presentato al convegno ASME 2018 Pressure Vessels and Piping Conference, PVP2018 tenutosi a Prague, Czech Republic nel July 15-20, 2018) [10.1115/PVP2018-84377].

A Resonating Lattice TMD to Reduce Pipeline Vibrations

MURUGAN JAYA, MAHESH;Rosario Ceravolo;Emiliano Matta;
2018

Abstract

There are numerous ways to realize vibration absorbers. In thisstud y, a new method is proposed wherein an elastomeric lattice is used. The geometrical configuration of the lattice is designed such that it transfers energy from the main system and is dissipated by the inherent material damping of the lattice material. The applicability of this system is numerically evaluated for pipelines by using two simple lattices whose geometries were optimized and the performances under harmonic loads compared with that of the theoretical optimal TMD. Eventhough they were capable of reducing the vibrations significantly, it was found to be less efficient at small mass ratios while at large mass ratios, the lattices performed similar to the theoretical optimal TMD. Nevertheless, in order to use such systems for pipelines or pipeline like structures such as chimneys, further studies are required using improved lattice configurations that can work efficiently for the whole range of mass ratios.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2712134