Abstract
This paper discusses the properties of viscoelastic damper during long duration random vibration. Experiment is carried out to evaluate viscoelastic damper properties such as temperature dependence, stiffness etc. Experimental results show that temperature inside the viscoelastic material body become stable by effect of heat conduction & heat transfer even if the damper is vibrating randomly. Moreover, They show that the influence on the temperature history by heat transfer coefficient is large. In addition, these experiments adopt a simplified evaluation method using sinusoidal-wave to substitute for random time history data properties. Accuracy of evaluation method is validated by comparing with experiment result using random time history data.
