Hysteretic properties of metal rubber particles

The hysteresis behaviour of metal rubber particles has been characterised. A quasi-static experiment was conducted to measure the damping behaviour of metal rubber particles. The effects of imposed displacement and filling density were examined. A mathematic model has been established to characterise the damping behaviour of metal rubber particles. A single-helix spring model was used to represent the microelement of the metal rubber material. This was composed of three contact states: open, slipping and sticking. The stiffness properties for the three cases were derived. The arrangement and spatial distribution of the microsprings were assumed to be uniform and periodic inside the metal rubber particles component. The test results were compared with the simulation results which showed a good correspondence.