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Equivalent-force density method as a shape-finding tool for cable-membrane structures

机译：等效力密度法作为电缆膜结构的找形工具

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摘要

Cable-membrane structure is a kind of flexible tension structures, of which both cables and membranes are lack of bending and compressing stiffness. In order to reduce the nonlinearity and the strong coupling between its geometric shape and internal stress distribution to improve the computational efficiency and convergence, this paper developed an equivalent-force density method by identifying the equivalent axial force density and equivalent transversal force density to replace the prestress in triangular and quadrilateral membrane elements. Then the method was applied as a shape-finding tool for cable membrane structure. Furthermore, several numerical simulations, including planar cable-membrane structure, catenoid and umbrella/tent-like cable-membrane structures, were conducted to confirm the efficiency and robustness of the proposed method. (C) 2017 Elsevier Ltd. All rights reserved.
机译：索膜结构是一种柔性张拉结构，其索和膜都缺乏弯曲和压缩刚度。为了减少非线性和几何形状与内部应力分布之间的强耦合，以提高计算效率和收敛性，本文通过确定等效轴向力密度和等效横向力密度来替代等效应力密度法，开发了等效力密度法。三角形和四边形膜单元中的预应力。然后将该方法作为电缆膜结构的找形工具。此外，进行了数个数值模拟，包括平面电缆膜结构，悬链线和伞形/帐篷状电缆​​膜结构，以确认所提出方法的效率和鲁棒性。 （C）2017 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Engineering Structures》 |2017年第15期|11-19|共9页
  • 作者

    Tang Yaqiong; Li Tuanjie;

  • 作者单位

    Xidian Univ, Sch Mechanoelect Engn, POB 188, Xian 710071, Shaanxi, Peoples R China;

    Xidian Univ, Sch Mechanoelect Engn, POB 188, Xian 710071, Shaanxi, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Cable-membrane structure; Force density; Shape-finding;

    机译：索膜结构;受力密度;形状确定;

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