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| Truss element method for cutting pattern of membrane structures |
| Revised:December 22, 1999 |
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| DOI：10.7511/jslx20014098 |
| KeyWord:surface development,flattened form,FEA |
| ZHANG Qi lin ZHANG Li LUO Xiao qun |
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| Abstract: |
| In this paper the principle for development of arbitrary curved surface is proposed. Such principle is proved equivalent to the condition of zero residual forces of FEA equation for plane structures. The increment FEA method and iterative procedures are derived to develop curved surfaces. For developable surfaces the method of this paper will present the accurate flattened forms, and for non developable surfaces this paper can lead to the closest flattened form. Numerical examples show that the method of this paper has stable convergence and high efficiency. It can be easily used in solving the problems of surface development in different engineering fields, especially for cutting pattern of membrane structures. |