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Mechanical analysis of sealing performance for compression packer rubber tube

机译：压缩包装机橡胶管密封性能的力学分析

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摘要

The compression packer rubber is one of the core components of the packer. According to the sealing mechanism of the compression packers rubber, the deformation of rubber between the central tube and casing tube is analyzed in the initial and working stages. The compression rubber is also strained radially against the support ring by means of a controlled tubular expansion process. In this paper, the theoretical model for the deformation analysis is established by the structure and working characteristics of rubber tube. In addition, the nonlinear relationship between the material, geometry and stress in the constrained and stable deformation stages is analyzed by application of pressure methods. The analytical results show the contact pressure and shear stress distribution on the sealing surface of the rubber and the effect of rubber geometry and its material properties on sealing performance in terms of maximum sealing pressure. Then, the criterion of sealing performance evaluation of the rubber is established by the numerical results. This analytical model will provide a theoretical basis and guidance for the structural design of the compression packer rubber and it will be of great significance to improve the sealing performance and reliability of packer rubber.
机译：压缩包装器橡胶是封隔器的芯部件之一。根据压缩封装机橡胶的密封机构，在初始和工作阶段分析中心管和壳管之间的橡胶的变形。通过受控的管状膨胀过程，压缩橡胶也通过控制的管状膨胀过程径向抵靠支撑环。本文通过橡胶管的结构和工作特性建立了变形分析的理论模型。另外，通过施加压力方法分析受约束和稳定的变形阶段之间的材料，几何和应力之间的非线性关系。分析结果显示了橡胶密封面上的接触压力和剪切应力分布以及橡胶几何形状及其材料特性在最大密封压力方面对密封性能的影响。然后，通过数值结果建立橡胶的密封性能评估的标准。该分析模型将为压缩包装机橡胶的结构设计提供理论依据和指导，并具有重要意义，可以提高包装橡胶的密封性能和可靠性。

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