The soft metal sealing structure widely used in LOX/kerosene rocket engine was numerically simulated by means of the Nastran implicit nonlinear module and the method which combines the contact model and material elastic-plastic model. The relevant parameters such as structure stress, displacement, contact stress and so on are analyzed. The result shows that the intensity of the soft metal sealing structure can satisfy the requirement of application when it is at the pressure of 45 MPa, the contact stress of the sealing surface is above 300 MPa, and the sealing safety factor is more than 1.67.
References:
[1]张贵田. 高压补燃液氧煤油发动机[M]. 北京: 国防工业出版社, 2005.
[2]PHILLIPS Dawnr R, WINGATA Robert J. Seal analysis for the ares-I upper stage fuel tank manhole covers,