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《Journal of Zhejiang University(Engineering Science)》 2010-01
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Strength optimization analysis of tensegrity structure by shape adjustments under restricted displacements

XIAO Nan,HUANG Yu-xiang,DONG Shi-lin,XIAO Xin(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China)  
Actuators were introduced into the structure for shape adjustment in order to enhance the stiffness and reduce the interior forces of tensegrity structure.The reasonable working state coefficient of the structure was defined and the iterative matrix equations of interior force vector and nodal displacement vector including the active displacement vector of actuator were derived considering the geometric nonlinearity.Then a linear programming model was established for minimizing the working state coefficient subjected to the restricted nodal displacements,cable stresses and working parameters of the actuator.Through the optimization model,the active displacements of the actuators were solved and a Matlab program was developed.The results of example show that the structural stiffness was enhanced under the same loads by varying the structural shape,and the objectives of both minimizing the interior forces and enhancing the stiffness were reached by just disposing actuators in cables.
【Fund】: 国家自然科学基金资助项目(50638050 50978228)
【CateGory Index】: TU399
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