Thermomechanical Coupling in Viscoelastic Solids
Experimental data on the heat generated in polymeric specimens undergoing oscillatory deformations are presented. Various factors which affect the hysteresis, including strain amplitude, frequency and mode of loading, and ambient temperature are investigated. It is observed that not all of the energy added to a specimen during a cycle of deformation is dissipated as heat. A comparison of theory and experiment demonstrates that the remaining (or “stored”) energy must be accounted for in predicting the thermomechanical behavior of such materials.
KeywordsStrain Amplitude Temperature History Polyethylene Tube Theoretical Solution Torsional Oscillation
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