摘要
拟粘滞摩擦耗能器既有摩擦力与速度成正比的特点,又克服了粘滞耗能器粘液易渗漏的缺点,在工程抗震中具有良好的应用前景。对于拟粘滞摩擦耗能系统响应的计算,我们一般采用Wil-son-θ法和Newmark-β法,但存在误差大,对时间步长要求严格的缺点,笔者将精细积分法引入拟粘滞摩擦耗能系统响应的计算中,并将在不同时间步长下的计算结果与用传统的Wilson-θ法和New-mark-β法的计算结果加以比较,得出在相同时间步长下,引入精细积分法的计算精度较高,且在较大时间步长下,该种方法仍能保持较好精度的结论。
A precise integration method is presented for studying the response of a system with pseudo-viscous friction energy dissipator. The result calculated by the precise integration method in different time steps is compared with the result calculated by Wilson-O method and Newmark-β method. We draw the conclusion that the result calculated by precise integration method has higher precision than the result calculated by the other two methods in the same time step, and that the result precision calculated by precise .integration method can be kept in bigger time step. This calculation method can be used for improving response calculation precision and calculation speed of the system with pseudo-viscous friction energy dissipator.
出处
《机械科学与技术》
CSCD
北大核心
2009年第12期1584-1587,共4页
Mechanical Science and Technology for Aerospace Engineering
