In order to improve the sealing performance of the beam seal

the structural parameters of the beam seal were used as design variables

and the optimization design was carried out. Firstly

a finite element model of the beam seal with elliptical are groove was established. Secondly

taking the maximum contact pressure of the sealing contact surface as a quantitative indicator of sealing performance

the sensitivity analysis of five structural parameters that affect the sealing performance of the beam seal was carried out

and the structural parameters with significant effects were selected to establish a second-order response surface model. Finally

the genetic algorithm was used to solve the multi-objective optimization of thel response surface model

and the effectiveness of the optimization results was verified by the finite element numerical simulation. The results show that the three parameters of the ellipse semi-major axis

the elliptic semi-minor axis and the nominal width of thefirst seal have a more significant impact on the sealing performance of the beam seal. When the three values are taken as 1. 051 mm

0. 540 mm and 0. 060 mm respectively

the sealing performance of the beam seal can be effectively improved.