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提出了一种实用的新型含压电堆材料的主元杆件,阐述了其应用于钢结构稳定控制的基本工作机理,讨论了该主元杆件在不考虑机电耦合及考虑机电耦合时的极限承载力的改变,同时运用有限元法,讨论了压电主元杆件中含压电堆的长度对其静力稳定性的影响,并进行了数值计算。结果表明:考虑机电耦合能够显著提高主元杆件的极限承载力;主元杆件所含压电堆的长度对静力稳定性的影响并非线性提高,而是必须在特定的刚度优化时才能进行有效地控制。
A practical new pole element for piezoelectric material containing piles is presented. The basic principle of its application in the stability control of steel structures is expounded. The main element of the pole element is discussed when it does not consider the electromechanical coupling and the electromechanical coupling At the same time, using the finite element method, the influence of piezoelectric pile length on the static stability of the piezoelectric element is discussed and the numerical calculation is carried out. The results show that considering the electromechanical coupling can significantly increase the ultimate bearing capacity of the main element; the length of the piezoelectric element contained in the main element does not increase linearly with the static stability, but must be optimized with certain stiffness Effective control.