实验证明同时具有干摩擦与粘性阻尼之隔振器是一种简单而有效的设备,它能够显著地降低悬臂结构的振动水平。但干摩擦是非线性力,计算比较复杂,它不能用通用程序为SAP5求介。本文将摩擦力表达为福里哀级数,求得了响应的级数解,其每一项均对应于某一模态之线性解,可由SAP5程序求出。由于级数收敛很快,因而只需少数几项就能得到足够精确的结果。 Experiments show that both the dry friction and viscous damping vibration isolator is a simple and effective device that can significantly reduce the vibration level of the cantilever structure. However, dry friction is a nonlinear force, the calculation is more complex, it can not be general procedures for SAP5 seeking referrals. In this paper, the friction force is expressed as Foliage series, and the series solution of the response is obtained. Each of them corresponds to the linear solution of some modal, and can be obtained by SAP5 program. Due to the fast convergence of the series, only a few items will be able to obtain sufficiently accurate results.