人体脊柱冲击响应的流变学模式(英文)

A RHEOLOGICAL MODEL OF HUMAN SPINAL COLUMN RESPONSE TO IMPACT

在评述有向曲线理论后,提出脊柱作为有向曲线组合体的流变学模式、本构方程表明了一类具有衰退记忆的粘弹性材料,作出适当限制所得到的简单非线性理论可确定脊椎的响应,而将脊椎视为组合杆。本文处理了这种杆内冲击波的传播和衰减问题。得到人体脊椎内可传播的所有波的波强的一般生成-衰减规律。最后,理论上预示潜在激波形成。

After reviewing the theory of directed curves, a rheological model of the spinadorsalis as a composite of directed curves is proposed. Constitutive equations arepresented for a class of viscoelasitic materials with fading memory.Suitableconstraints are imposed which yield a simple nonlinear theory governing theresponset of the spine regarded as a composite rod. The problem of the propagationand decay of blast waves in this rod is treated. The general growth-decay law governingwave strength is obtained for all waves which can propagate in the human spine. Finally,the possible shock wave formation is theorctically indicated.