Study of leakage and friction of combined seal in hydraulic servo-actuator via finite element and numerical approximation method
Hydraulic servo-actuator for reciprocating rotation is a driver applied in flight motion simulator. To achieve a better low speed property of flight motion simulator, the leakage and friction of seal should be carefully studied. Many works have been done to develop the new combined seal and analyze the sealing properties but they are always confined to use finite element program to compute the contact pressure of seals. The limitation of this method is very clear because the leakage and friction force which are regarded as the most important parameters of sealing cannot be studied. In this paper a combined seal which commonly used in hydraulic servo-actuators is proposed. Based on this combined seal, a new kind of method, combined finite element with numerical approximation is used to analyze the sealing property. In order to study the seal property finite element program ADINA 8.3.2 is applied to analyze the combined seal structure and compute the distribution of contact pressure. After that, a numerical approximation model based on EHL theory which was firstly proposed by George K. Nikas is utilized to find out the dependence of leakage and friction force on contact pressure, by which film thickness, leakage and hydrodynamic friction force is achieved.
Hydraulic servo-actuators Combined seal FEM ADINA Leakage and friction force
Xiao Cui Yanliang Dong Keding Zhao
Laboratory of Liquid Transmission and control, College of Mechatronic Engineering, Harbin Institute of Technology, Harbin 150001, China
国际会议
杭州
英文
883-886
2009-04-08（万方平台首次上网日期，不代表论文的发表时间）