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A New Singular Quasi-compatible Finite Element of Piezoelectric Materials and Its Fracture Analysis

CAO Zong-jie~(1,2),KUANG Zhen-bang~2(1.Department of Aeronautic Mechanical Engineering,Aviation University of Air Force,Changchun 130022,China)(2.Department of Engineering Mechanics,Shangshai Jiaotong University,Shanghai 200240,China)  
The active vibration control of adaptive structures for large complex spacecrafts is studied by Human-Simulated Intelligent Control(HSIC) experiments of a tetragonal prism truss with a test platform based on MATLAB/dSPACE environment.The results show that HSIC can be effectively used for the vibration control of adaptive structures with piezoelectric stack actuators to solve the contradiction between accuracy and rapidity.The amplitude of vibration is decreased more than 90% when continuously excited at a low resonant frequency,the time of vibration after an impingement is decreased more than 90%,and the control results are also satisfied when excited with chirp and mixed frequencies.
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