Because of the traditional spatial latticed shell structure prone to dynamic instability and do not have self-adjust and self-control ability, the paper put forward a new idea which through active control for the dynamic stability of spatial latticed shell structures based on intelligent material, then derived the dynamic instability active control finite element equation, which proved through the active control, it can avoid or reduce structure dynamic instability region. Based on the active control optimization design, it can be seen with the increase of active member, the control effect of dynamic instability is enhanced, and the active control of structure dynamic instability need based on multipoint control; Through the latticed shell structure dynamic instability active control test, the acceleration and displacement of overall structure get a good control effect, which make the structure stress get reasonable redistribution, structural dynamic characteristic has been adjusted, and the dynamic stability performance improved.
Ma Qian-ying;Wang She-liang;Zhu Jun-qiang;Xiong Er-gang.
Theory and Experimental Study of Active Control on the Dynamic Instability of Spatial Latticed Shell Structure[J]. Journal of Vibration and Shock, 2013, 32(17): 123-127
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