Analysis on energy absorption and impact prevention features of hexagonal thin-wall component under radial compression

In order to enhance the capacity of the pilot hydraulic powered support in the mine gateway to resist the mine pressure bump and the gateway effective support to prevent the mine pressure bump disaster occurred, a hexagonal thin-wall energy absorption and impact prevention component instlled on the canopy of the powered support was designed to improve the bump resistance capacity of the powered support. A numerical simulation calculation was conducted on the energy absorption and impact prevention features of the component. The results showed that under the radial compression,the hexagonal thin-wall energy absorption and impact prevention component would have a very stable deformation failure mode, a quite constant reaction force and high stroke efficiency. The dimension and material of the component would have a less infuence to the stroke etfficiency and load fluctuation coefficient. With the plastic deformation,the component could absorb the energy. Wwithin the effective stroke of the deformation and yield,the absorbed energy would be increased in liner with the compression distance increased. With the weathickness increased,the crushing peak load of the component,average crushing load and the total energy absorption would be increased in linear with the length and material yield strength increased. The crushing peak load and average crushing load of thecomponent would be decreased with the internal side length increased. The sturdy results could provide the basis to the selection of the component size and material.