The Compression Deformation Analysis of Packer Rubber Cylinder via the Yeoh-Revised Model and its Verified Test

The Yeoh constitutive model is widely utilized in finite element analysis for the compression packer rubber cylinder with special-shaped structures, owing to the model's ability to accurately predict the single tensile stress over broad ranges. Nevertheless, the Yeoh constitutive model demonstrates significant limitations in predicting the equal-biaxial tensile loading. Consequently, to achieve more precise forecasting of the compression packer rubber cylinder sealing performance, the novel Yeoh-Revised constitutive model is introduced in this paper. Initially, under the assumption of initial isotropy and totally incompressible of the hydrogenated nitrile butadiene rubber, the deformable sealing properties are analyzed using Yeoh-Revised and Yeoh models. The findings indicate that the Yeoh-Revised model is more effective in predicting the seal stability and reliability, thereby offering a suitable approach to determining the appropriate structure dimensions. Subsequently, the high pressure and high temperature test verifies that the material strength properties are the prerequisites to achieve a stable and reliable seal. The Yeoh-Revised constitutive model would offer reliable results for further slowing down the aging and optimizing the structural size.