Shim analysis for spherical elastomeric bearings
| Autor: | R.A. Schapery |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Physics::Medical Physics Modulus 02 engineering and technology Elastomer law.invention Strain energy 0203 mechanical engineering Natural rubber law General Materials Science Bearing (mechanical) business.industry Applied Mathematics Mechanical Engineering Linear elasticity Shim (magnetism) Structural engineering 021001 nanoscience & nanotechnology Condensed Matter Physics Finite element method 020303 mechanical engineering & transports Mechanics of Materials Modeling and Simulation visual_art visual_art.visual_art_medium 0210 nano-technology business |
| Zdroj: | International Journal of Solids and Structures. :276-288 |
| ISSN: | 0020-7683 |
| DOI: | 10.1016/j.ijsolstr.2018.05.013 |
| Popis: | This paper describes development of equations for linear elastic stress analysis of concentric shims (reinforcements) in spherical multilayer bearings under general three-dimensional loading and uniform temperature change. The theory is based on a generalization of thin shell theory and the Complementary Strain Energy Principle. Some examples are given to illustrate the shim stresses due to direct loading from the rubber pads and their agreement with finite element predictions. This loading is found using the linear elastic pad and bearing analysis in (Schapery, 2018). Although the shims are assumed perfectly rigid in the pad and shim analyses, the total strain energy in the shims can be found using their Young's modulus and Poisson's ratio, enabling estimation of the effect of shim deformation on bearing stiffness. These analytical models for pads and shims are intended to assist in rapid preliminary design of elastomeric bearings when utilized, for example, in a Mathcad computer program embedded in Excel that the author used. Final designs can be done with finite elements to account for rubber nonlinearity and shim deformation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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