摘要
以非线性有限元理论为基础,分析了具有压电阻尼器杆件的歌德斯克穹顶网壳结构在地震作用下的动力反应,以跟踪结构的时程响应过程及能量变化情况。引入稳定度概念,总结了稳定度判定准则,以此来判定结构的动力稳定性;同时与位移判定准则和应力变化率准则进行了对比,相互验证。采用ANSYS分析压电网壳的动力特性,用自编的Matlab程序计算结构的能量变化及稳定度,得出了压电网壳振动规律,为压电智能结构进行动力稳定主动控制提供了理论基础。
Based on the nonlinear finite element theory,the dynamic stability of the Goehte Scott dome net shell structure with piezoelectric damper bar under earthquake is analyzed,and the time history response process and energy change of structure are presented.Moreover,by introducing the concept of stability,the stability criterion is summed up to determine the dynamic stability of the structure; at the same time,the displacement criterion and the stress rate criterion are compared and authenticated with each other.The dynamic characteristics of piezoelectric shell are analyzed using ANSYS,the energy transforming and stability of the structure are calculated by Matlab of our own,and the piezoelectric shell vibration rule are concluded,which laid a theoretical foundation for dynamic stability control of the piezoelectric smart structure.
出处
《工程抗震与加固改造》
北大核心
2013年第6期24-29,共6页
Earthquake Resistant Engineering and Retrofitting
基金
国家青年科学基金项目(51008245)
关键词
歌德斯克穹顶网壳
压电阻尼器
能量
稳定度
地震作用
Goethe Scott dome net shell
piezoelectric damper
energy
stability criterion
seismic loads
