粘弹性介质的碰撞特征

本文研究了粘弹性材料的碰撞特征。指出随阻尼比增加,碰撞力呈非线性变化,撞击力极值出现的时间提前,能量按指数规律耗散。同时,随阻尼比增加,材料性质由Hook固体转化为Newton流体。 对动物脊髓进行打击实验研究的结果与上述理论相一致。

Feature of Impact About Viscoelastic Material

In the present paper, we discuss the impact viscoelastic material. We indicate that with the increasing of damping ratio, the impact force is changed nonlinearly, and the appearance time of maximum impact farce is shifted earlier, and the energy dissipated in the index law. Along with the increasing of the damping ratio, the property of the material turned from Hook's solid to Newton's fluid. The result of experimental impact injury to spinal cord js accord with the theoretic analysis.