Proposal of an Orthotropic Hyperelastic Model and Application to Fiber-Reinforced Rubber Seals in Electric Generator
| Autor: | Osamu Watanabe, Kazuyuki Nakahara, Akihiro Matsuda |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Polynomial (hyperelastic model)
Materials science business.industry Quantitative Biology::Tissues and Organs Mechanical Engineering Yeoh Biaxial tensile test Reinforced rubber Structural engineering Physics::Classical Physics Compression (physics) Orthotropic material Condensed Matter::Soft Condensed Matter Condensed Matter::Materials Science Natural rubber Mechanics of Materials Hyperelastic material visual_art visual_art.visual_art_medium General Materials Science Composite material business |
| Zdroj: | TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A. 77:1213-1224 |
| ISSN: | 1884-8338 0387-5008 |
| DOI: | 10.1299/kikaia.77.1213 |
| Popis: | In this paper, we propose an orthotropic hyperelastic model for the fiber-reinforced rubber material used as rubber seals in electric generators. The fiber-reinforced rubber is composed of rubber matrix material that is reinforced by two families of fibers. The mechanical properties is anisotropic on directions of two fiber families. We improve an anisotropic model by adding terms to the strain energy function to consider its mechanical properties in small deformation region. The energy functions of the fiber families was represented by power series of invariants of stretch and shear deformation in fiber families. Moreover, the proposed strain energy function was polyconvex in totality. In order to identify material parameter of the proposed model, biaxial tensile test result of the rubber matrix and uniaxial tensile test result of the fiber-reinforced rubber were approximated by the nonlinear least squares method. Finally, applicability to the fiber-reinforced rubber of proposed model by FEM simulation of tensile, shear and compression was demonstrated to evaluate the applicability of the proposed model to the rubber seal. |
| Databáze: | OpenAIRE |
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