Simulation-based design of hybrid particle dampers with application to flexible multibody systems
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In: Eberhard, P. (eds): Calm, Smooth and Smart : Lecture Notes in Applied and Computational Mechanics: 45-62 (2023)
Particle damping technology is a passive damping technique used to reduce structural vibrations. Either containers attached to the vibrating structure or holes within the vibrating structure are filled with a granular material. By structural vibrations, momentum is transferred to the granular material causing granular interactions. By these interactions, energy dissipation occurs due to inelastic normal collisions and frictional losses. This reduces the structural vibration. Although particle dampers have already been applied to some technical applications, their wide industrial usage is still limited. The main reason for this is the nonlinear damping behavior of this technique and the multitude of influence parameters. Hence, the goal of this project is the development of a new design methodology in form of a toolchain for passive vibration damping of lightweight structures and machines using particle dampers. Thereby, using simulations that are verified by experiments, also a deeper understanding of the micro-mechanical processes in the dampers are obtained. This is crucial in the systematic design of particle dampers using numerical methods. Using the developed toolchain single particle damper units with predefined characteristics are developed which do not rely on a specific application. Hereby, hybrid approaches are used to increase the efficiency of the individual particle dampers. Hence, it is possible to extend particle dampers to a variety of very different applications.
620: Engineering and Applied Operations