Analysis of the shock absorbing performance of a rubber air spring with auxiliary chamber

The theoretical model for a rubber-air spring with auxiliary chamber is establishted to analyze its shock-absorbing performance. The solution of the system shock response resorts to numerical methods because the relations of the spring load and the inside volume with the deformation of rubber bladder can not be described with analytical equations. To perform the numerical calculation, the system control equations are transformed into difference equations, and the finite element analysis of the rubber bladder is employed in the process. Based numerical results, the shock absorbing performance of a rubber air spring is studied, and the influence of related parameters are analyzed.