As we all know, most of the ductwork blast gate damper use momentum exchange and friction as the energy dissipation mechanism to temporarily transfer or permanently consume the energy of the system. A collision ductwork blast gate damper with particle damping agent composed of steel ball impactor and granular damping material is added to the damper cavity, and the impact of the steel ball during the vibration process can be used to squeeze the granular material in the cavity. Plastic deformation, which permanently dissipates the energy of the system. In terms of vibration damping performance, the influence of the presence or absence of impactor and the presence or absence of filler particles was studied. Among them, there was only one impactor and only copper powder as the particle material.

However, if one impactor is replaced with multiple impactors, the damping performance of the ductwork blast gate damper can be partially improved. There is no research on the role of multiple impactors in collision damping with particle damping agents, and whether different particulate materials, especially non-metallic particles, are effective in the damper, has not yet been involved.