The Equivalent Optimization Research On Performance Of Finger Seal

Finger seal(FS) is a new innovative seal technologies developed in recent years. Because it's hard to establish the optimization mathematical model, the optimization of FS's characteristic can't be managed well. In view of the situation, the paper establish equivalent model based the working principle of FS. Through constructing the mapping relation between equivalent parameters and finger seal's structural parameters, finding the hysteresis and wear performance of finger seal in the equivalent model, optimization mathematical model is established. Then the paper solve the problem by optimization theory, realize controllable optimization of FS, and establish the base for farther research.In order to get the mapping relation between equivalent parameters and finger seal's structural parameters, orthogonal experiment design has been used and finite element simulation experiment have been done in ANSYS considering the multi-structure parameters and multi-working parameters of FS system. Then A mass-spring-damp model is proposed to solving the hysteresis and wear performance of finger seal.Firstly, based on the working principle of finger seal, the paper formulates the transformation from hysteresis optimization of finger seal to the optimization of equivalent mathematic model. A mass-spring-damp model is proposed through constructing the mapping relation between equivalent parameters and finger seal's structural parameters. Then the structural parameters are optimized with the objective of minimum hysteresis rate in finger seal. Meanwhile it also solves the problem that the hysteresis optimization of finger seal is uncontrollable. Finally the simulation in Finite Element Method (FEM) software validates the equivalent mathematic model.Secondly, the paper solve the integrative capability optimization of FS. Because the two aim of the optimization can't be described in one equivalent model, the paper get function relation between two aims. The controllable integrative capability optimization of FS is gained by linearity weighted method. Analyzing working performance and structure of FS, the best structural parameter of FS is got by complex...