Investigation on the effect of the honeycomb core orientation to lateral plates on the energy absorption capacity of the sandwich panel used in the elevator hole

Sandwich panels are used due to the ability of the core to absorb energy efficiently to Damped the kinetic energy from collision and exposure to the explosive wave. In the present study, the effect of the orientation of the core of honeycomb sandwich panel to the lateral plates and the loading direction on the absorption and dissipation of energy due to the cabin lift with a sandwich panel embedded in the elevator hole has been investigated. Six angles of 0, 5, 10, 20, 30 and 45 degrees were used for this purpose. It was observed that by increasing the angle of orientation of the panel core, the stiffness of the panel will fall, and this decrease will occur with a greater increase in the angle of the more orientation of the core strongly. By increasing the amount of honeycomb core angle from the optimal limit, the structure will experience compression and due to large plastic strains, which causes the stiffness of the panel to rise and the panel acts as a rigid body due to its incompressibility and its energy depreciation is severely reduced.