血液粘弹特性的力学模型

Mechanic Model of Blood Viscoelasticity

本文提出由一个弹性模量为G的胡克弹簧与粘度为η_c(Casson粘度)的阻尼器相串联的粘弹体力学模型,并讨论这一模型的粘弹特性:应力松驰、蠕变和动粘弹性。结果表明,这些特性与具有屈服应力的血液的粘弹行为相一致(除蠕变外)。由此现模型可视为血液粘弹特性的一个简化的力学模型。本文还探讨了屈服应力与粘弹特性的相互关系。

The paper presented a mechanic model which is Hook's spring with modulus of elasticity G in series with damper of viscosity g(Casson's viscosity), and discuss viscoelasticity of the model: stress relation, creep, dynamic viscoelasticity. The results showed that viscoelasticity of the model approach to the real viscoelasticity of human blood with the yield stress and so the model can be considered as a simple mechanic model of blood viscoelasticity. The paper also approach relationship between t he yield stress and blood viscoelasticity.