| Second Shape Finding Analysis of Membrane Structures |
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| 作者姓名： | 杨维国 甄伟 徐福江 那向谦 |
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| 作者单位： | DepartmentofCivilEngineering,TsinghuaUniversity,Beijing100084,China |
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| 基金项目： | SupportedbytheNationalNaturalScienceFoundationofChina(No.50178035) |
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| 摘 要： | A second shape finding method was developed to improve the nonlinear finite element based shape finding method. The curved shape is obtained by raising the control points above the projection planeThe convergence was improved using pseudo material properties to get a preliminary shape, and then using the real properties to get the final shape. A large number of examples were analyzed to verify the validity and practicality of this method. The results show that the final curved surface after the second shape finding process is always quite similar to the first one. Moreover, the curved surface obtained after the second shape finding process is accurate and will be realized in real materials.
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| 关 键 词： | 薄膜结构 刚性结构 非线性有限元 伪物料性质 二次成形 建筑材料 |
Second Shape Finding Analysis of Membrane Structures |
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| YANG Weiguo ZHEN Wei,XU Fujiang,NAXiangqian.Second Shape Finding Analysis of Membrane Structures[J].Tsinghua Science and Technology,2004,9(6):726-730. |
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| Authors: | YANG Weiguo ZHEN Wei XU Fujiang NAXiangqian |
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| Institution: | YANG Weiguo ZHEN Wei,XU Fujiang,NAXiangqianDepartment of Civil Engineering,Tsinghua University,Beijing 100084,China |
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| Abstract: | A second shape finding method was developed to improve the nonlinear finite element based shape finding method. The curved shape is obtained by raising the control points above the projection plane. The convergence was improved using pseudo material properties to get a preliminary shape, and then using the real properties to get the final shape. A large number of examples were analyzed to verify the validity and practicality of this method. The results show that the final curved surface after the second shape finding process is always quite similar to the first one. Moreover, the curved surface obtained after the second shape finding process is accurate and will be realized in real materials. |
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| Keywords: | membrane structure shape finding nonlinear pseudo material properties second shape finding |
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