期刊
ENGINEERING STRUCTURES
卷 166, 期 -, 页码 240-250出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.engstruct.2018.03.063
关键词
Tensegrity structures; Member connectivities; Nodal positions; Optimization; Mixed integer nonlinear programming
资金
- Natural Science Foundation of Zhejiang Province [LR17E080001]
- National Key Research and Development Program of China [2016YFC0800200]
An optimization approach based on force density method and mixed integer nonlinear programming is proposed for optimization of tensegrity structures on member connectivities and nodal positions. The member connectivities, nodal coordinates and force densities are simultaneously used as design variables and the number of nodes is the only necessary parameter needed to be given in advance, The proposed approach possesses a general-purpose formulation which can be degenerated into both conversional form-finding formulation and previous member connectivities-finding formulation. Various properties such as the number of cables, nodal coordinates and evenness of member internal forces can be controlled and optimized by introducing appropriate constraints and objective functions. Numerical examples are carried out to verify the proposed approach and illustrate that not only classical tensegrity systems but also novel tensegrity systems can be obtained by the proposed approach.
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