Modelling a partially liquid-filled particle damper using coupled lagrangian methods
Estadístiques de LA Referencia / Recolecta
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/186881
Tipus de documentText en actes de congrés
Data publicació2019
EditorCIMNE
Condicions d'accésAccés obert
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Abstract
Energy dissipation in particle dampers (PDs) is complex and occurs mainly due to the relative motion between particles and to their surroundings. The degree of relative motion is particularly sensitive to changes in the external vibration amplitudes. Low vibration amplitudes lower the relative motion between solid particles, and thus lead to significantly lower energy dissipation rates. In order to influence the degree of relative motion between solid particles, a method is investigated in which the PD is filled with a combination of solid and
liquid fillings. Moreover, with the PD partially filled with a liquid, the solid particle shape plays a more profound role in enhancing the damping performance. In order to investigate the effects of complex particle shapes and an added liquid, a simulation model based on Lagrangian methods is presented in this work. In order to validate the simulation models, experiments were also carried out. The experimental setup consists of a PD mounted on a vertical leaf spring. The PD is a cylindrical container filled with complex shaped particles in combination with a liquid. The complex shapes, here chosen to be tetrapods, were manufactured using a Stereolithography 3D printer. A good agreement between simulations and experiments is observed. In order to gain a deeper insight, a numerical study is pr sented which investigates the effects of solid-liquid
ratio on the dissipated kinetic energy.
ISBN978-84-121101-1-1
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Particles_2019- ... artially liquid-filled.pdf | 1,597Mb | Visualitza/Obre |