The principle of damping with particles is presented in the work using the example of a fully clamped plate. A design was created and numerically validated. An experiment was set up where plates natural modes were obtained from a larger number of measurement points. Subsequently, the influence of particle damping on the dynamic response of the structure was explored. Two types of particles were used in different configurations on the plate. Measurements obtained with a laser vibrometer were processed using the open-source package PyEMA for modal analysis, which provided us with damping coefficients for observed natural modes. The results show that the first natural frequency of the plate was most significantly damped, regardless of the configuration and type of particles used. Plastic particles prove to be slightly better damping
agents than rubber particles.
|