粘弹性阻尼器的力学特性分析

MECHANICAL ANALYSIS OF A VISCO-ELASTIC DAMPER

在正弦输入的假设下,推导了用分数微分Maxwell模型建模粘弹性阻尼器时力和位移的表达式,并用该表达式分析了阻尼器的力学特性。将该算法的理论计算分别与已有的理论计算和试验结果进行比较,结果吻合的都比较好,证明了该算法的正确性。同时根据该表达式给出了粘弹性阻尼器能量耗散的计算方法。

Based on a sinusoidal input, force and displacement expressions of a damper are formulated by using the fractional derivative Maxwell model. The mechanical property of the damper is analyzed using these expressions. The force-displacement loops calculated with these expressions are compared with the known theoretical and the experimental loops, respectively. The excellent agreements validate the credibility of the technique proposed. Furthermore, the dissipated energy expression in one period is gained according to these expressions.