Computational Method for Prestress Developing of Tensile Cable-Net Structures

The prestress developing of tensile cable-net structures is a state transforming process from the initial unstressed state to the final prestressed state, and it is rather complicated because the elastic deformation is normally coupled with the kinematic mechanism movement. Firstly, the basic equati...

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Bibliographic Details
Published in:Shanghai jiao tong da xue xue bao 2013-04, Vol.18 (2), p.197-204
Main Author: 赵俊钊 陈务军 付功义
Format: Article
Language:English
Subjects:
Architecture
Boundaries
Computation
Computer Science
Elastic deformation
Electrical Engineering
Engineering
Evolution
Life Sciences
Materials Science
Mathematical analysis
Mathematical models
Matlab
MATLAB程序
Movement
开发
张力
无应力状态
移动边界
索网结构
计算模式
预应力
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Summary:The prestress developing of tensile cable-net structures is a state transforming process from the initial unstressed state to the final prestressed state, and it is rather complicated because the elastic deformation is normally coupled with the kinematic mechanism movement. Firstly, the basic equations of prestress developing by moving boundary joint are derived from the total potential energy equation. Secondly, the presumed initial tension is proposed to impose into the elements and avoid the singularity of global stiffness matrix. And the self-stress mode which is calculated from the equilibrium matrix with singular vMue decomposition is employed as basically presumed initial tension. By applying boundary movement increment, an iterative computation is developed to calculate the updating geometric configuration and tension evolution. Finally, the MATLAB program is coded from the presented method, and numerical examples indicate that this computational method is effective and has theoretical significance and valuable guide to design and construction of tensile cable-net structure.
ISSN:1007-1172
1995-8188
DOI:10.1007/s12204-013-1383-4