We demonstrate refinements of a simple elastic-viscous-plastic rheological model with the addition of a thixotropic term to better model rheological flow of human blood. The alteration of this model will contribute to better representation of lightly structured complex materials. The simple elastic-viscous-plastic (EVP) framework requires thixotropy for more accuracy in fitting and predicting the thixo-elasto-visco-plasticity of rheological flows with a microstructure. We demonstrate the performance of the added thixotropic features by comparing the TEVP construct to similar peer models using a cost function generated from predictions of rheological flows from triangle ramps to large amplitude oscillatory shear flow. To verify the efficacy of these thixotropic enhancements, the performance of the model is then measured against the other models with a penalty assessed based on number of model parameters. The framework holds the name “Enhanced Thixotropic-Elasto-Visco-Plastic” to reflect this methodology of adding thixotropy to the elastic-viscous-plastic capabilities of the standard construct.

我们展示了一个简单的弹-粘-塑性流变模型的改进，并增加了触变项以更好地模拟人类血液的流变性。这种模式的改变将有助于更好地代表各轻结构化的复杂材料。简单的弹性-粘塑性（EVP）框架需要触变性，以更精确地拟合和预测具有微观结构的流变流的触变-弹-粘塑性。我们通过使用成本函数将TEVP构造与类似的对等模型进行比较，从而证明了添加的触变特征的性能，该成本函数是根据从三角形斜面到大振幅振荡剪切流的流变流的预测生成的。为了验证这些触变性增强的功效，然后针对其他模型对模型的性能进行了测量，并根据模型参数的数量对惩罚进行了评估。该框架的名称为“增强的触变性-弹-粘-塑性”，以反映这种将触变性添加到标准构造的弹粘塑性中的方法。