Design and performance research on core energy absorption component of anti-impact support

In order to solve the structure failure and column wreck problem of roadway hydraulic support in rock burst, a kind of component that can quickly abdicate and absorb impact energy is designed,which is used in gantry energy absorption and anti-impact hydraulic support. And then the component is used to protect hydraulic columns and the o- verall structure of support from damage. In this paper,the structural and energy-absorption performance of energy-ab- sorption component is studied. Firstly,five performance requirements of energy absorption component were proposed according to the anti-impact function of gantry energy absorption hydraulic support,which are bearing capacity,reac- tion force changes,energy absorption,energy absorption and stability. Then,the structure design and mechanical prin- ciple of energy absorption component were discussed in detail,and the buckling energy absorption mechanism of com- ponent was analyzed by numerical simulation. Finally,the mechanical properties of 1 ∶ 1 energy absorption component was studied by laboratory experiments. The experimental results show that the bearing capacity of energy absorption component is 2 428 kN,and the post-buckling reaction is relatively stable. When the compression is 50% ,the average energy is 357 kJ. The absorption energy is transformed into the irreversible deformation energy of component. The buckling process is stable and close to the numerical simulation result.