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http://dx.doi.org/10.12989/sem.2015.54.6.1045

Modified nonlinear force density method for form-finding of membrane SAR antenna  

Xu, Rui (College of Aerospace Science and Engineering, National University of Defense Technology)
Li, DongXu (College of Aerospace Science and Engineering, National University of Defense Technology)
Liu, Wang (College of Aerospace Science and Engineering, National University of Defense Technology)
Jiang, JianPing (College of Aerospace Science and Engineering, National University of Defense Technology)
Liao, YiHuan (College of Aerospace Science and Engineering, National University of Defense Technology)
Wang, Jie (College of Aerospace Science and Engineering, National University of Defense Technology)
Publication Information
Structural Engineering and Mechanics / v.54, no.6, 2015 , pp. 1045-1059 More about this Journal
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.
Keywords
form-finding; cable-membrane structure; force density method (FDM); equivalent transform relationship;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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