变速箱双层套环式组合密封结构有限元分析

The finite element analysis of transmission double ring type combined seal structure

利用ABAQUS建立变速箱双层套环式组合密封结构的二维轴对称模型,分析了密封圈的压缩量、介质压力对双层套环式组合密封结构的接触应力、变形、Von Mises应力分布的影响。结果表明:随着压缩量的增加,组合密封结构的变形及接触应力增大,V形橡胶圈的受力减小;随着介质压力的增加,组合密封结构的变形、接触应力及V形橡胶圈的受力增大,因此,在较大介质压力条件下,应适当增加压缩量;适当改变双层套环的尺寸,可以使V形橡胶圈受力减小,且齿形套环不易磨损,使用寿命延长。

The ABAQUS was utilized to establish the two-dimensional axisymmetric finite element model of transmission double ring type combined seal, the influences of the amount of compression, liquid pressure and the structure of tooth and sliding ring on contact stress, deformation, Von Mises stress and shear stress of the combined seal were analyzed. The result shows that with the increases of the amount of compression, the deformation and contact pressure of the combined seal increase, while the stress of the V-ring decreases ;with the increases of the liquid pressure, the deformation, the contact pressure and the stress of the V-ring increase, so the compression should be increased appropriately when the liquid pressure was high ;the stress of the O-ring decreases when the size of the tooth and sliding ring changed properly, while the tooth and sliding ring is not fret easily, and it can be used longer.