摘要 Hydraulic cylinder is a primary component of the
hydraulic valve systems. This paper describes the numerical study of hydraulic cylinder to
evaluate the stress analysis, the life assessment and the performance of operation characteristics
in hydraulic cylinder. This study incorporates the calculation of safety factor, fatigue life,
piston chamber pressure, rod chamber pressure and the change of velocity of piston with flow time
after the beginning of hydraulic cylinder. Numerical analysis was performed using the commercial
CFD code, ANSYS with unsteady, dynamic mesh model, twoway FSI (fluid-structure interaction)
method and k-ε turbulent model. The internal pressure in hydraulic cylinder through stress
analysis showed higher than those of the yield strength.
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