Optimization Design And Stability Analysis Of Honeycomb Type Spherical Reticulated Dome

Honeycomb type spherical reticulated dome that the dome mesh is hexagonal structure and rod sparse has the architectural advantages of saving building materials, simple and transparent visual effect with a transparent cover material and looking like the hive about the overall structure.As a new spherical dome structure style, the dome improves the rods and the nodes design, production and construction efficiency because of fewer rods and nodes style.It is easier to realize the goal of standardized and mass production of rods and nodes. So,the dome has broad application prospects and space for development.Not only the honeycomb spherical latticed dome but also the concave honeycomb spherical latticed dome and honeycomb spherical latticed dome parametric design and modeling method are presented in this paper. The relationship between macro and micro geometric parameters about the dome is studied and the corresponding mathematical expressions are given in the paper.The generation rules of the grid are analized. The calculation model of the four kinds of honeycomb type spherical dome can be generated as long as inputting dome rise F, span S, radial node number Nx and thickness T with the programming language APDL in finite element analysis software ANSYS.The above two categories of four kinds of honeycomb type spherical reticulated domes are analyzed by using ANSYS software.The maximum displacement and the most disadvantageous stress position with different geometric parameters of the whole structure is studied under the structure under uniform load. The foundation for structure optimization about the spherical reticulated domes is laid.The two categories of four kinds of honeycomb dome shape optimization design programs that are based on discrete variables have been worked out and the different spans, rise span ratios, grid numbers of these kinds of spherical domes structure for the shape optimization design have been be carried out carried out. be carried out. be carried out.The minimum amount of steel of reticulated dome structures is target. The optimal combination of the main design parameters is reached by considering the local constraints and global constraints. Changes of amount of steel with the different spans and rise span ratios about the same kind of reticulated dome structure are analyzed. Changes of amount of steel with the same kind of span about different kinds of reticulated dome structures are analyzed.Stability about honeycomb dome and Kiewitt typical spherical reticulated dome is contrasted and analyzed and getting the conclusions with application value.The eigenvalue buckling analysis and nonlinear analysis considering initial imperfection are Included. The buckling load values under ideal condition and the critical load values of considering the initial states are worked out about the reticulated dome structure that is optimized.The changes of the critical load values under ideal condition and the critical load values of considering the initial states are compared and analyzed. The displacement load curves are mapped and analyzed as well as the critical load of instability of the reticulated dome is identified...