Assessment on Capability of O-ring Seal Considering Effect of Material Rigidity in Hydraulic Motor
With the seal structure of hydraulicmotor of simulator being taken as the research subject,its finite element model was established by finite element analysis software ABAQUS.The finite element analysis on friction contact between O-ring seal and sealed face was performed by penalty function technique and with coulomb friction model.The influence of material rigidity on the contact pressure,Mises stress of O-ring seal,contact area between O-ring seal and sealed face was discussed and the distribution rules of contact pressure,Mises stress of O-ring seal and contact area between O-ring seal and sealed face were analyzed.The results show that the contact pressure changes with the hardness of the O-ring material as a"hump",and increases with the increase of the material hardness at the"hump"position,while the material hardness is less than 85 HA,the effect on the Mises stress of the O-ring is not obvious.When the material hardness is greater than 85 HA,the increase of the Mises stress is larger,which easily leads to the damage of the O-ring.As a whole,the contact area between the seal ring and the motor shaft decreases with the increase of the hardness of the seal ring material,therefore,the hardness of the seal ring should be controlled as far as possible to ensure sufficient contact area.
hydraulicmotor of simulatorO-ring sealmaterial rigidityfinite element analysis
万方数据
维普
