STUDY ON DYNAMICAL STABILITY OF MODIFIED PIEZOELECTRIC PIVOT ELEMENT BAR UNDER PERIODIC LOAD

摘要：

The piezoelectric material is a good kind of functional material which provided with a unique piezoelectric effect including direct piezoelectric effect and inverse piezoelectric effect. According to the excellent piezoelectric effect and inverse piezoelectric effect,this paper designs and fabricates piezoelectric pivot element bars which can accomplish testing-controlling functions,that is,integrate a piezoelectric stack into the element bars playing a major role to form a so-called piezoelectric pivot element bar. According to theories of structural stable science and structural dynamics,basic dynamical stability control function was put forward and the control properties were discussed with numerical simulation method. The research results show that with regard to coupling between mechanic-electric of piezoelectric,the dynamical instability area decreases for the effect of length of piezoelectric stack and driving force,thus the stability property of piezoelectric pivot element bar increases effectively. That is to say,the methods mat increase the exciting voltage appropriately can improve the dynamical performance of piezoelectric pivot element bar greatly.

关键词： Piezoelectric pivot element bar Dynamic stability Intelligent control

作者: Peng-Gang Tian She-Liang Wang Zong-Qi Gao Jian-Yong Lu

作者单位: College of Civil Engineering,Xian University of Architecture & Technology,Xian 710055,P.R. China S College of Civil Engineering,Xian University of Architecture & Technology,Xian 710055,P.R.China Shaanxi Institute of Architecture Science,Xian 710082 ,P.R. China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 1021-1026

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）