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Nonlinear analysis method is one of the earliest methods proposed for form-finding analysis of tensioned fabric structures. However due to some inherent weaknesses, the method has not been fully developed. In this paper, computational strategies for form-finding analysis of tensioned fabric structure using the nonlinear analysis method has been proposed. For the purpose of verification, form-finding analysis on numerical examples of tensioned fabric structures in the form of minimal surfaces Catenoid, Helicoid, Scherk and Enneper have been carried out. Both the obtained shape and pre-stress pattern have been checked with classical solutions for the above minimal surfaces for verification of the effectiveness of the proposed computational strategies.

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Abstract-Tensioned fabric structure in the form of Enneper minimal surface can be considered as a sustainable development for the green environment and technology, it also can be used to support the effectiveness used of energy and the structure. Sustainable development of tensioned fabric green structure in the form of Enneper minimal surface has been studied. The combination of shape and internal forces for the purpose of stiffness and strength is an important feature of fabric surface. For this purpose, form-finding using nonlinear analysis method has been carried out for Enneper minimal surface models with variables u=v=0.6 and u=v=1.0. Pattern of prestress in the resulting fabric surface has been studied. Enneper minimal surface models with variables u=v=0.6 and u=v=1.0 with fabric type A provides an alternative choice for practicing engineers to consider the tensioned fabric green structure in the form of Enneper minimal surface applied in the construction industry. It is expected to reduce the construction cost, shorten the construction time and improve the construction quality.Index Terms-Tensioned fabric structure, minimal surface, form-finding.

Form-finding of fabric surface bordered by Oval has been investigated. In this study, the possibility of adopting the form of Oval as surface shape for tensioned fabric structure has been studied. The combination of shape and internal forces for the purpose of stiffness and strength is an important feature of fabric surface. For this purpose, form-finding needs to be carried out. Nonlinear analysis method has been used for form-finding analysis of the fabric in the form of Oval.

Form-finding of tensioned fabric structure in the form of Enneper minimal surface has been investigated. Computational form-finding is frequently used to investigate the possible forms of uniformly stressed surfaces. In this study, two parameter of Enneper minimal surface was used in this study are u and v = 0.4 and 1.2. This study provides an alternative choice for engineer to consider the Enneper minimal surface, u = v = 0.4 and 1.2 to be applied in tensioned fabric structure.