密封弧面半径对C形组合密封圈密封性能的影响

为研究密封副处弧面半径大小对密封圈密封性能的影响,通过ANSYS有限元软件数值仿真方法研究了氢化丁腈橡胶和三元乙丙橡胶两种材料组成的C形组合密封圈.介绍了两种材料的非线性以及ANSYS中描述这类材料特性的Mooney-Rivlin模型,然后简述了有限元模型的建立、接触对以及载荷的设置.根据仿真得出的云图和数据,分别从V...

Influence of Curve Radius on C-type Composite Seal Ring's Sealing Performance

In order to study the influence of the radius of cambrium on the sealing performance of seal ring, the C-type composite seal ring composed of hydrogenated nitrile rubber and EPDM rubber was studied by the numerical simulation method of ANSYS finite element software. The nonlinearity of the two materials and the Mooney-Rivlin model describing the characteristics of these materials in ANSYS are introduced, and then the establishment of the finite element model, contact pairs and load settings are briefly described. According to the cloud image and data obtained from the simulation, the influence of the arc surface radius of the seal pair on the sealing performance of the C-type combined seal ring and whether the seal ring can meet the work are investigated from the three aspects of Von Mises stress, shear stress and contact pressure. Claim. The results show that: under different arc surface radius parameters, the sealing ring can achieve the sealing effect; when the arc surface radius is large, the Von Mises stress and the shear stress are both large, which increases the possibility of seal failure; on the arc surface When the radius is small, the contact pressure at the seal pair is relatively large, which increases the wear rate of the seal ring and reduces its service life. It can be seen that when the radius of the seal arc surface is 13 mm, the maximum Von Mises stress and shear stress are relatively small, and the contact pressure at the seal pair is moderate, which is more reasonable.