Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Structural Engineering and Mechanics Volume 54, Number 6, June25 2015 , pages 1045-1059 DOI: https://doi.org/10.12989/sem.2015.54.6.1045 |
|
|
|
Modified nonlinear force density method for form-finding of membrane SAR antenna |
||
Rui Xu, DongXu Li, Wang Liu, JianPing Jiang, YiHuan Liao
and Jie Wang
|
||
| Abstract | ||
| Form-finding for cable-membrane structures is a delicate operation. During the last decades, the force density method (FDM) was considered to be an efficient method to address the problem. Many researchers were devoted to improving this method and proposed many methods such as natural force density method (NFDM), improved nonlinear force density method (INFDM), et al. In this paper, a modified nonlinear force density method (MNFDM) is proposed. In this method, the stresses of membrane elements were transformed to the force-densities of cable nets by an equivalent relationship, and then they can be used as initial conditions. By comparing with the forming finding results by using the FDM, NFDM, INFDM and MNFDM, it had demonstrated that the MNFDM presented in this paper is the most efficient and precise. | ||
| Key Words | ||
| form-finding; cable-membrane structure; force density method (FDM); equivalent transform relationship | ||
| Address | ||
| Rui Xu, DongXu Li, Wang Liu, JianPing Jiang, YiHuan Liao and Jie Wang: College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, Hunan, 410073, People | ||