Twin Tube shock absorber thermo-mechanical coupling simulation

During the working process, temperature of the oil increases and its viscosity decreases due to the damping force, resulting in changes in operating characteristics of the shock absorber. This paper firstly analyzes the mechanism of themogenesis and heat transfer means of shock absorber in details, and then establishes the thermodynamic model of shock absorber with the energy conservation law and the first law of thermodynamics on this basis. After a comparison between the simulation results and the experimental results, causes of error will be analyzed. The study shows that the more influential correlations are the internal flow convection correlation used between the oil of the different chambers and the tubes of the shock absorber and the external flow convection correlation between the outside tube of the shock absorber and the ambient air.