Thixotropic Viscoelastic Systems

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Abstract
An attempt is made to explain the thixotropic behavior of certain fibers when they are stretched by postulating a number of potential energy surfaces which may govern the nature of the viscous flow within the fiber. On the basis of these energy surfaces, equations are obtained relating rate of elongation and applied stress, and these equations are integrated numerically to give a relation ship between applied stress and actual elongation. The energy surface giving results which ap proach the results of actual experiment is a simple modification of the surface which Eyring used to explain shear flow in viscous materials [3].

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