A microstructure model to describe the viscoelasticity and thixotropy properties of complex fluids is proposed. The model is based on the Lodge–Yamamoto network theory and is an extension of the Phan-Thien–Tanner model, with a kinetic process in which specific forms of creation and destruction rates are assumed. The final equation is simple with a small number of empirical parameters required and can be conveniently employed in engineering simulations. The predictions based on the model in a variety of shear and oscillatory shear flows are given. The stress response obtained from the model prediction agrees well with experiments on both shear and oscillatory flow histories.

中文翻译：

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粘弹性-触变流体的微观结构模型

提出了描述复杂流体的粘弹性和触变性的微观模型。该模型基于Lodge-Yamamoto网络理论，是Phan-Thien-Tanner模型的扩展，具有动力学过程，其中假定了特定形式的创造和破坏速率。最终方程很简单，只需要少量的经验参数，可以方便地用于工程仿真中。给出了基于模型的各种剪切和振荡剪切流的预测。从模型预测获得的应力响应与剪切流和振荡流历史的实验非常吻合。