The possibility to pre-establish the features of a shockabsorber is analyzed in this work. Numerical simulations were used to evaluate the influence of a few geometrical parameters on the force given under excitation. Since the oil flowing inside a shock-absorber can follow several directions, an iterative procedure was applied to determine the opening of the valves incorporated in the piston, and the formulas of the elastic strain for the circular plate were used for this purpose. The damping coefficients were obtained from the characterristic and work diagrams; they were then analyzed as function of a few geometrical features of the shock absorber. The results show that the thickness of the shim valves and the preload on the extension valve have more influence than the other parameters on the damping force.
Design optimization of a shock absorber based on numerical simulation
BASSO, ROBERTO;FANTI, GIULIO
2008
Abstract
The possibility to pre-establish the features of a shockabsorber is analyzed in this work. Numerical simulations were used to evaluate the influence of a few geometrical parameters on the force given under excitation. Since the oil flowing inside a shock-absorber can follow several directions, an iterative procedure was applied to determine the opening of the valves incorporated in the piston, and the formulas of the elastic strain for the circular plate were used for this purpose. The damping coefficients were obtained from the characterristic and work diagrams; they were then analyzed as function of a few geometrical features of the shock absorber. The results show that the thickness of the shim valves and the preload on the extension valve have more influence than the other parameters on the damping force.
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