Study on the Difference of Valve Finite Element Analysis Results Under Different Meshing Methods

The meshing method determines the accuracy of the valve finite element analysis results, but the influence trend of different grid forms and densities on the calculation results has rarely been studied. Taking the spool of an axial check valve as an example, the differences of the calculation results of different software and the influence of meshing and density on the calculation results in the process of valve finite element simulation were discussed. The results show that the finite element analysis results of valve strength are determined by the pretreatment and solution settings. Compared with the tetrahedral mesh, the use of hexahedral meshing can effectively avoid the stress singularity or stress concentration caused by meshing, and can reduce the mesh penetration error between the contact surfaces, so that the valve strength calculation results are more accurate, in addition, the hexahedral mesh calculation results are more stable and less affected by the mesh density. The research results provide guidance for the selection of valve meshing method and the determination of strength analysis results.