Analysis of static sealing rules of foamed silicone rubber based on a porous media model

IF 1.3 4区医学 Q4 MATERIALS SCIENCE, BIOMATERIALS

Cellular Polymers Pub Date : 2020-05-01 DOI:10.1177/0262489319890076

Tianzheng Wen, Fei Guo, Yijie Huang, S. Zhu, X. Jia

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引用次数: 3

Abstract

We established a method for calculating and analyzing the static leakage rate based on a porous media model for foamed silicone rubber materials. The mechanical properties of the foamed silicone rubber material under macroscopic compression were described by the Ogden third (foam) model in the finite-element hyperelastic model. It solved the problem of difficult convergence of large compressible and volume compressible cell materials. The size and distribution of the cells on the surface of the foamed material were obtained by a white-light interferometer and mathematical fitting. The boundary conditions for solving the porous medium model were obtained by the coupling of the macroscopic contact pressure and the microscopic cell contact pressure. For the unique cell structure and contact state of the surface of the foamed material, the flow state of the fluid at the sealing interface was described by a porous medium model, and the leak rate was obtained. In addition, this article analyzed the effect of different compression and the relative pressure of the sealing end face on the leakage.

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基于多孔介质模型的发泡硅橡胶静密封规律分析

基于多孔介质模型，我们建立了一种计算和分析泡沫硅橡胶材料静态泄漏率的方法。泡沫硅橡胶材料在宏观压缩下的力学性能由有限元超弹性模型中的Ogden-third（泡沫）模型描述。它解决了大可压缩和体积可压缩单元材料难以收敛的问题。通过白光干涉仪和数学拟合获得了泡沫材料表面细胞的大小和分布。通过宏观接触压力和微观细胞接触压力的耦合，得到了求解多孔介质模型的边界条件。针对发泡材料表面独特的孔道结构和接触状态，通过多孔介质模型描述了流体在密封界面的流动状态，并获得了泄漏率。此外，本文还分析了不同压缩和密封端面相对压力对泄漏的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Cellular Polymers 工程技术-材料科学：生物材料

CiteScore

3.10

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： Cellular Polymers is concerned primarily with the science of foamed materials, the technology and state of the art for processing and fabricating, the engineering techniques and principles of the machines used to produce them economically, and their applications in varied and wide ranging uses where they are making an increasingly valuable contribution. Potential problems for the industry are also covered, including fire performance of materials, CFC-replacement technology, recycling and environmental legislation. Reviews of technical and commercial advances in the manufacturing and application technologies are also included. Cellular Polymers covers these and other related topics and also pays particular attention to the ways in which the science and technology of cellular polymers is being developed throughout the world.