Modeling and Analysis of Influencing Factors of Sealing Structure Based on Finite Element Method
The sealing ring structure has a direct impact on the sealing and pressure resistance of the high-pressure testing device.Based on the structural characteristics of the high-pressure testing device,analyze the structural parameters of the O-shaped seal-ing structure,and analyze the characteristics based on the Mooney Rivlin model.Using MARC finite element analysis method to analyze the sealing of O-ring,the size of contact pressure stress and Von Mises stress under different sealing clearances and groove depths are analyzed.Based on the analysis results,the sealing clearance and groove depth parameters are optimized.The results show that the sealing gap is between 0.04 and 0.14mm,and the compression rate is between 10%and 20%,which can meet the sealing requirements under the designed bearing conditions.Through analysis of influencing factors,it was found that the sealing gap is positively correlated with Von Mises stress and negatively correlated with contact stress.As the compression ra-tio increases,the Von Mises stress first increases and then decreases,and the maximum contact stress first decreases and then in-creases.Under a pressure of 80MPa,a smaller sealing gap and compression ratio are beneficial for the load-bearing capacity of the sealing structure.By analyzing the trend of sealing ring design,it was found that the optimal solution for the parameters is a clearance of 0.043mm,a groove depth of 5.357mm,and a compression rate of 10%.The analysis methods and research results can provide reference for the design of O-shaped sealing structures in ultra-high pressure vessels.
Sealing StructureInfluencing FactorsFinite Element MethodO-RingHigh Pressure Test Device
NETL
NSTL
万方数据
维普
