Study On The Contact Problem Of Multi-Elastic Body Seal

The vane seals and the end seals have an extremely important influence on the sealing performance of hydraulic rotary vane actuator(RVA).Under the action of pre-compression,the contact surface of the end seals will be deformed by the normal force and tangential force and easy to lead to the leakage of RVA.Therefore,it has obvious practical significance to explore deformation condition,the contact pressure and stress distribution between the vane seals and the end seals,and it provides a new idea and new reference for the future study of RVA.Aiming at these deficiencies,Author designs the reasonable size of the vane seals and the end seals through theoretical and experimental analysis,so that the RVA can achieve better sealing effect.The main contents of this paper include the following aspects:(1)According to the structural characteristics and material properties of vane seals and end seals,this paper establishing the theoretical model of contact pressure and stress,to solve the specific distribution through the theory of elasticity and contact mechanics,and discuss the failure modes and their influence factors.(2)The theoretical model of the vane seals and end seals contact surface deformation were established through the theory of elasticity and contact mechanics.Based on Matlab programming,the influences of the pre-compression pressure,elastic modulus,and vane seals dimensions on the contact pressure,stress and deformation of vane seals were calculated and analyzed.(3)The FEA models of the vane seals and the end seals were established by ABAQUS finite element software.The distribution of stress,contact pressure and deformation conditions of the end seals were calculated and the results were compared with the results of the mathematical model,to verify the correctness of the mathematical model.(4)Through building test platform,the actual stress value of the end seals under the pre-compression pressure is measured by the DATA TRANSLATION data collector,the results were compared with the results of the corresponding finite element model,to verify the correctness of the mathematical model.