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FE heat conduction modeling of Rubber segment at mechanical harmonic excitation
Šulc, Petr ; Pešek, Luděk
This contribution deals with the numerical finite element modeling of rubber sample temperature field at the harmonic mechanical loading when the heat generated by absorbed mechanical energy is substituted by the constant heat rate input. As the study case a segment of the rubber-damped railway tram wheel was chosen. This segment was experimentally tested and the results were used for tuning the parameters of the FE model of heat conduction and transfer in program ANSYS 6.1.
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Termomechanické procesy v poddajných tlumících členech
Pešek, Luděk ; Půst, Ladislav ; Vaněk, František
Effect of increase of heat in the rubber-like materials with high inner damping during repeated deformation is investigated. Rheological properties e.g. stiffness and damping of such materials depend considerably on temperature. Knowledge of complex modulus properties of polymeric damping materials are strongly needed for the design of systems suppressed to vibrations, for the control of vibrations and noise. Simplified mathematical model of two degrees of freedom is analysed from the point of view of lost energy, heat transfer between inner and outer part, cooling of the surface and changing stiffness and inner damping. This model is the first stage for studying of thermomechanic interaction in the 3D form of damping elements by FEM
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