An analysis on the shear modulus of the modified Jeffreys model

摘要

The thixotropic substances are presented in various industrial sectors, as cosmetic, paint, food and oil. A great number of constitutive models for thixotropic substances can be found in specialized literature. The focus of this work is the analysis of the shear modulus functional form, associated to the thermodynamically consistent constitutive model (the modified Jeffreys model) proposed in Azikri de Deus et al., aiming to propose an improved new functional form that shows a better behavior related to the rheological tests. This work presents a numeric-computational methodology, via inverse problems approach, as a consistent way to analyze the shear modulus behavior. It is important to point out the versatility of the proposed procedures presented in this work, being them able to be easily used in other different models.