Damper force characteristics of a separated dual-chamber single-rod-type damper using an elastomer-particle assemblage

•Separated dual-chamber damper using an elastomer particle assemblage was proposed.•The damper force shows a hardness-type damping characteristic.•The damper force has a hysteresis characteristic.•Damper force changes greatly depending on the packing fraction or the material.•Damper force changes with vibration frequency and piston stroke.