Abstract
The method of design and calculation of single convoluted air spring is studied in this paper. And the method is used to design an air spring which is meet the demand. The load, static stiffness, dynamic stiffness, and normal frequency of the air spring are calculated and tested. The aramid cord filament framework layer of the air bag and the air inside are modeled by the Rebar Element and Cavity Element of the MSC.Marc software respectively. And the nonlinear Finite Element Analysis (FEA) model is obtained. The characteristics of the air spring are calculated by FEA. Lastly, the characteristics of the air spring are tested by the MTS test machine. The design and simulation results are accord with the experiment results. The theoretical analysis and experimental results indicate that the design method is simple and exact, the nonlinear FEA model simulate exactly the air spring, and the design and simulation method can be used to design the single convoluted air spring.
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