Targetting the sealing property and strength

a research on the compression ratio of metallic W-ring was carried out. Based on the determined compression rate

the axial clearance of the casing was optimized

the influence of key structural parameters of the metallic W-ring on the strength was studied. After the sensitivity analysis

the structural parameters of the metallic W-ring were further optimized. The relationship between the buckling and the axial stiffness of the metallic W-ring was researched

and stiffness experiment was used to verify the simulation results

and support the evaluation of the critical buckling loads. The results showed that under the typical operating condition

the reasonable compression ratio range of the metallic W-ring was 3.2%-6.08%. The thickness had the greatest effect on the maximum equivalent stress. The final optimization results were as follows: the thickness increased by 5.0%

the radius of wave peak and wave trough increased by 9.0%

the contact radius increased by 7.7%

the outer diameter of the ring reduced by 5.8%

the maximum equivalent stress reduced by 5.7%; buckling load was linearly related to axial stiffness.