Shock absorbers are the equipment for damping the energy which is divided into two parts, reversible and irreversible. Irreversible shock absorbers are usually used in places which exposed to objects falling such as elevators. Those sorts of absorber, consume the energy by means of converting the kinetic energy to plastic strain energy, therefore they are not reversible. These absorbers are available in different shapes. Recyclable ones mostly contain of a spring, a damper and a plate that the spring accumulate the energy and the damper, damp it. These absorbers are applicable in different industries such as automotive, railing, telecabin, … In the present study first the spring and damper of absorber are investigated and numerically simulated. To available the simulation, the results are compared with analytical ones. Then to simulate the material in the impact condition, the coefficients of viscose- elastic and constitutive equation are extracted by means of empirical test. After that by the simulation of the rubber in finite element code, comprehensive analyses are performed. The results are compared with the available experimental tests which show that the numerical results are in a good agreement with theoretical solution and experimental test. Eventually to investigate the damages to sheet edge, this case are simulated in various condition.