Experimental and mathematical modeling of granular dampers with varied internal geometries, densities, and hardness

In this research, granular dampers were designed and manufactured by modifying the geometry and roughness of their internal walls to evaluate their influence on damping and energy dissipation. Additionally, tests were conducted using various granular media, with differing grain density and hardness to analyze their effects. The experiments were performed using the TM1016V-Experiment vibration machine from TECQUIPMENT, generating displacement versus time graphs by mounting the granular damper on a cantilever beam system. High-speed filming and particle tracking were employed to analyze the flows within the damper, enabling mathematical modeling of the particles' trajectories and interactions. The ultimate goal of this research is to design a granular damper that effectively reduces vibrations in handheld tools.