ZHANG Fuying, LI Tiantian, ZHANG Yufei. Analysis on Free Deformation Characteristics of Packer Rubber Surface Under the Initial Sealing Load[J]. Applied Mathematics and Mechanics, 2019, 40(4): 419-432. doi: 10.21656/1000-0887.390096
Citation: ZHANG Fuying, LI Tiantian, ZHANG Yufei. Analysis on Free Deformation Characteristics of Packer Rubber Surface Under the Initial Sealing Load[J]. Applied Mathematics and Mechanics, 2019, 40(4): 419-432. doi: 10.21656/1000-0887.390096

Analysis on Free Deformation Characteristics of Packer Rubber Surface Under the Initial Sealing Load

doi: 10.21656/1000-0887.390096
  • Received Date: 2018-03-29
  • Rev Recd Date: 2018-09-20
  • Publish Date: 2019-04-01
  • The displacement and deformation characteristics of the inner and outer surfaces of the packer rubber under the initial load in the free deformation stage were investigated. Based on the continuum mechanics, a finitedeformation mathematical model was established in the free deformation stage. The process of radial deformation of the inner and outer surfaces of the packer rubber under the initial axial load was given, and the analytical solution of the nonlinear deformation of the packer rubber was obtained. Through numerical calculation, based on the solution of analytical formulae for free deformation of the outer surface, the influences of the nonlinear deformation law and the relevant parameters on the sealing performance of the inner surface were further analyzed. The results of deformation characteristics can be applied to different types of packer rubbers, and provide an important theoretical basis for the sealing and reliability design of packer rubbers.
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