Prediction of heat generation in rubber or rubber-metal springs
| Autor: | V Aleksandar Miltenovic, S Petar Djekic, S Milan Banic, J Milan Rackov, S Milos Milosevic, Vojislav Miltenović, S Dusan Stamenkovic |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Quantitative Biology::Tissues and Organs lcsh:Mechanical engineering and machinery Constitutive equation rubber-metal spring 02 engineering and technology 7. Clean energy Condensed Matter::Materials Science Thermal conductivity 0203 mechanical engineering Natural rubber lcsh:TJ1-1570 Composite material Thermal analysis hysteresis heat generation Renewable Energy Sustainability and the Environment Dissipation 021001 nanoscience & nanotechnology Physics::Classical Physics Finite element method Condensed Matter::Soft Condensed Matter 020303 mechanical engineering & transports Dynamic loading Heat generation visual_art visual_art.visual_art_medium finite elements 0210 nano-technology |
| Zdroj: | Thermal Science, Vol 16, Iss suppl. 2, Pp 527-539 (2012) |
| ISSN: | 0354-9836 |
| Popis: | The temperature of rubber or rubber-metal springs increases under cyclic loading, due to hysteresis losses and low rubber thermal conductivity. Hysteresis losses correspond to energy dissipation from the rubber, which is primarily converted into heat. This well-known phenomenon, called heat build-up, is the primary reason for rubber aging. Increase in temperature within the rubber compound leads to degradation of its physical and chemical properties, increase in stiffness and loss of damping capability. This paper presents a novel procedure of heat generation prediction in rubber or rubber-metal springs. The procedure encompasses the prediction of hysteresis loss, i. e. dissipated energy within the rubber, by finite element analysis and application of a modern visco-plastic rubber constitutive model. The obtained dissipated energy was used as an input for transient thermal analysis. Verification of the proposed procedure was performed by comparison of simulation results with experimentally obtained data during the dynamic loading of the rubber specimen. The proposed procedure is highly computationally efficient and it enables time integration, which can be problematic in coupled mechanical thermal analysis. [Projekat Ministarstva nauke Republike Srbije, br. TR35005: Research and Development of New Generation of Wind Turbines of High Energy Efficiency] |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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