A novel constitutive equation for viscoelastic- thixotropic fluids and its application in the characterization of blood hysteresis loop

摘要

In this work, a novel consititutive equation for viscoelastic-thixotropic fluid has been developed based on the principle of mechanical analogy, and used to characterize "8" shaped blood hysteresis loops with viscoelastic and thixotropic properties. The results showed that the novel constitutive equation may describe the "8" shaped hys- Teresis loop completely and accurately, the calculated curves are in excellent agreement with the Experimental data. The viscoelastic and thixotropic parameters obtained from normal and path- Ological hysteresis loops are resonable.