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An improved form-finding method for tensile structures

YU Zhi-xiang,ZHAO Lei(School of Civil Eng., Southwest Jiaotong University, Chengdu610031,China)  
Based on FEM, an improved form-finding method deriving from boundary displacement method and approximative surface-approaching method is put forward which can be used to analyze the initial form-finding of cable structures, membrane structures and tensile beam structures to seek a method which can be applicable for tensile structures widely. Some key problems are discussed concerning non-convergence in nonlinear solution process. Some calculation examples and projects in practice demonstrate that the method can be applicable and correct mechanics model must be established by form-finding in tensile structures.
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