| CFD-FEA ANALYSIS OF HYDRAULIC SHOCK ABSORBER VALVE BEHAVIOR |
| M. SHAMS1, R. EBRAHIMI1, A. RAOUFI1, B. J. JAFARI2 |
1K. N.Toosi University of Technology
2Indamin Saipa Shock Absorber Mfg. Co. |
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| ABSTRACT |
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In this study, a Coupled Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) method are used to predict and evaluate the performance of an automotive shock absorber. Averaged Navier-Stokes equations are solved by the SIMPLE method and the RNG k- ε is used to model turbulence. CFD analysis is carried out for different intake valve deflections and piston velocities. The force exerted on the valve in each valve deflection is obtained. The valve deflection - force relationship is investigated by the FEA method. The force exerted on the valve in each piston velocity is obtained with a combination of CFD and FEA results. Numerical results are compared with the experimental data and have shown agreement. Dependence of valve deflection as a function of piston velocity is investigated. Effects of hydraulic oil temperature change on valve behavior are also studied. |
| Key Words:
Shock absorber, Hydraulic damper, Hydraulic valve, CFD simulation, FEA method |
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