PREDICTION OF HEAT GENERATION IN RUBBER OR RUBBER-METAL SPRINGS

Abstract

The temperature of rubber or rubber-metal springs increases under cyclic oading, due to hysteresis losses and low rubber thermal conductivity. Hysteresis osses correspond to energy dissipation from the rubber, which is primarily onverted into heat. This well-known phenomenon, called heat build-up, is the rimary reason for rubber aging. Increase in temperature within the rubber ompound leads to degradation of its physical and chemical properties, increase n stiffness and loss of damping capability. This paper presents a novel procedure f heat generation prediction in rubber or rubber-metal springs. The procedure ncompasses the prediction of hysteresis loss, i. e. dissipated energy within the ubber, by finite element analysis and application of a modern visco-plastic ubber constitutive model. The obtained dissipated energy was used as an input or transient thermal analysis. Verification of the proposed procedure was erformed by comparison of simulation results with experimentally obtained data uring the dynamic loading of the rubber specimen. The proposed procedure is ighly computationally efficient and it enables time integration, which can be roblematic in coupled mechanical thermal analysis.

Keywords

Dates

  • Submission Date2012-05-03
  • Revision Date2012-07-07
  • Acceptance Date2012-07-12

DOI Reference

10.2298/TSCI120503189B

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