Force Method of Surface Force Density with Applications to Tensility Structures
Xia Jinsong(1),Guan Fuling(1),Li Gang(2)
(1 Zhejiang University Hangzhou 310027) (2 Jiaxing College Jiaxing 314001)

Abstract: With the wider applications of membrane structures, the requirements to shape design become more multifarious. The force method, which is introduced t he concept of surface force density of membrane element, is used to find the for m of tensility strcutres. This method enables to quickly find the individual form to different force density under the same boundary conditions. The optimized reposition balance method for force-finding analysis usually is employed to acc urately evaluate the self-balance prestress of tensility structures. So a combi nation of the force method of surface force density with the optimized reposition balance method, facilitates completing whole process of shape design.
Keyword: tensility structures, surface force density, force method, form-finding, force-finding analysis, optimized reposition balance method.