Finite Element Analysis of the Rubber Sealing Yx-ring in Hydraulic Cylinder

This paper presents an analysis of the rubber sealing Yx-ring in hydraulic cylinder with finite element method and ANSYS software. The distribution nephogram of contact stress between the sealing ring and cylinder, and the relationship between the contact stress and the working pressure under different working conditions were obtained. Results show that the contact stress distributes asymmetrically and exhibits in the form of the pressure peak. With the increase of the working pressure, the contact stress increases correspondingly, and the region of high contact stress called main seal region becomes larger and shifts along the contact length slightly. The maximal contact stress is not only linear with the working pressure, but also always greater than the working pressure in working condition, which ensures the performance of the sealing Yx-ring.