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《Sichuan Building Science》 2013-01
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The complexity analysis of structural dynamics based on constraint-change

YIN Ke1,LI Jiankang1,SONG Xiangrong2(1.Faculty of Science,Jiangsu University,Zhenjiang 212003,China; 2.School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China)  
Constraint conditions have significant impact on the dynamic nature of structures.Based on complexity theory and multi-valued coarse-grained method,the acceleration response signals of structure is analyzed,then the complexity changes are obtained and compared with the changes of structure dynamics characteristics got by finite element modal analysis under the same conditions.The result shows that LZC of the response signals changes significantly with the changes of constraint conditions,indicating that the variation of LZC reflects the changes of structure inherent dynamics.This method needn't to establish a precise mathematical model and has a certain significance to the dynamics of complex structures.
【CateGory Index】: TU311.3
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