【作者】 戴维荧； 魏德敏；

【Author】 DAI Wei-ying, WEI De-min(College of Architecture & Civil Engineering, South China Univ. of Tech. ,Guangzhou 510640, P. R. China)

【机构】 华南理工大学建筑学院；

【摘要】 张拉膜结构裁剪分析中两个主要问题分别是空间曲面展平和膜片预应力补偿。本文以等效结点力法作为曲面展平的理论基础,运用由膜单元应力推算单元等效结点力的转换公式,利用有限元程序ANSYS实现空间膜曲面展开至平面的几何变换过程,并提出了考虑预张力释放的空间膜曲面展成平面的新思路,用算例证明了该方法的正确性。更多还原

【Abstract】 Two key problems on cutting pattern generation of tension membrane structure: are the flattening method in 3D membrane strip and the releasing of prestressing in the membrane strip. Based on the method of equivalent node force and the transformation formula which element equivalent node force is deduced from the membrane elements stress, This paper completes the geometry topology process of converting the 3D membrane surface into a set of planar cloths by using the finite element package ANSYS. In addition, a new method considering the releasing of prestressing in membrane structures is demonstrated by the calculating examples.更多还原