针对结构带有广义Maxwell阻尼器体系在地震作用下Maxwell阻尼器阻尼力的计算进行分析.首先建立设置广义Maxwell阻尼器的单自由度结构一般运动方程;为获含有阻尼力项的方程,本文运用扩阶法将结构的二阶变频运动转化为一阶时不变线性状态方程组,利用复模态法进行求解,在过滤白噪声的作用下获得阻尼力的解析式,并给出算例;从而建立单自由度减震结构计算Maxwell阻尼力的方法,为减震结构阻尼器的设计建立基础.
The damping force of the structure with generalized Maxwell damper is studied under earthquake action. First, the general equation of motion of a single degree of freedom structure with generalized Maxwell damper is established; by using the expansion method, the two order frequency equation of motion is transformed into the first order linear time invariant state equations and then the equation containing damping force is obtained, by using complex modal method to solve, then the analytical formula of damping force is got under the action of filtering white noise and the example is given. Accordingly, the calculation method of Maxwell damping force of a single degree of freedom structure is established and the foundation for damper designing of damping structure is given.