A reduced multimodal thermoelastic model of a circular Mindlin plate
| Autor: | Anna Warminska, Simona Doneva, Jerzy Warminski, Emil Manoach |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Partial differential equation Field (physics) Mechanical Engineering 02 engineering and technology Mechanics 021001 nanoscience & nanotechnology Condensed Matter Physics Nonlinear system 020303 mechanical engineering & transports Thermoelastic damping 0203 mechanical engineering Buckling Mechanics of Materials Ordinary differential equation Plate theory General Materials Science 0210 nano-technology Bifurcation Civil and Structural Engineering |
| Zdroj: | International Journal of Mechanical Sciences. :479-489 |
| ISSN: | 0020-7403 |
| DOI: | 10.1016/j.ijmecsci.2019.02.010 |
| Popis: | A nonlinear thermoelastic model of a circular plate is presented in the paper. The model, based on the Mindlin plate theory, is extended by taking into account nonlinear geometrical terms. Partial differential equations of plate’s dynamics are derived for a fully coupled thermal and mechanical fields. Then the model is reduced to a set of ordinary differential equations taking into account the first three natural modes and assuming a constant thermal field. The influence of elevated temperature on the resonance curves and the mode involvement due to nonlinear and thermal couplings is presented. The analysis shows that the increased temperature may lead to various bifurcation scenarios. The buckling phenomenon and post-buckling nonlinear regular and chaotic oscillations are studied. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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