关键词: 蠕变, O 形圈, 接触压力, 非线性有限元分析

Abstract: To address the issue of outer ring running in the floating end bearing of servo motors, it is usually necessary to add rubber O-rings for corresponding treatment. The size specifications of the O-ring, as well as the size and tolerance of the O-ring groove, directly affect the torque of the anti-running ring. When selecting the O-ring specifications and designing the size of the O-ring groove, relevant content needs to be calculated. Finite element method was used to analyze and calculate the pre-tightening force and anti-running torque provided by O-rings under different hardness and groove sizes. This calculation method has certain guiding significance for the selection of Orings and the design of O-ring grooves.

Key words: creep, O-ring, contact pressure, nonlinear finite element analysis