摘要
为了控制风作用下建筑物的振动,将一种新型形状记忆合金(shape memory alloy,简称SMA)阻尼器安装在20层的电视塔结构模型上,建立了在该阻尼器作用下的框架结构动力学平衡方程及其求解方法,并运用Matlab对其进行了田浦台风风谱作用下的框架结构风振控制实验的数值模拟,先后得到了风速风载时程曲线图、控制前后的振动位移曲线图和速度时程曲线图.结果表明,在该种阻尼器的作用下,框架结构的抗风位移响应效果明显,结构的风致振动衰减速率有显著提高.
A new shape memeory alloy damper was applied to a frame structure to control its wind-induced vibration. It has been constituted that dynamical equation of frame structure under operation of SMA damper and its solution. Based on the time-history emulation analysis for a frame which is affected by the Tian Pu typhoon wind speed spectrum, two results with SMA dampers and without SIVA dampers are compared by management of Matlab, and the curves of velocity and load of wind firth-history are derived,cootrast of clisplacment,contrast of velocity time-history. The experimental results illustrate that the developed SMA dampers are more efficient to reduce structural response and have great potential for use as effident energy dissipation deviees.
出处
《广西大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第1期40-44,49,共6页
Journal of Guangxi University（Natural Science Edition）
关键词
形状记忆合金
阻尼器
结构风振控制
shape memory alloy
damper
wind-induced vibration control of structure
