期刊
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
卷 65, 期 10-11, 页码 1987-1994出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jcsr.2009.06.012
关键词
Space trusses; Nonlinear analysis; Generalized displacement control method; Updated Lagrangian; Post-buckling
资金
- Korea Research Foundation
- National Research Foundation of Korea [핵C6A2106] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This paper presents the large deflection inelastic analysis of space truss structures including both geometric and material nonlinearities. The geometric nonlinearity is considered, based on an updated Lagrangian formulation, while the material nonlinearity is accounted for by tracing a complete stress-strain relationship in the elastoplastic range. The nonlinear equilibrium equations are solved using an incremental-iterative scheme based on the generalized displacement control method. This algorithm can accurately trace the equilibrium path of nonlinear problems with multiple limit points and snap-back points. A computer program is developed to predict the inelastic post-buckling behavior of space trusses. Numerical results obtained from the developed program are compared with those reported in the literature to demonstrate the accuracy of the proposed procedure. (c) 2009 Elsevier Ltd. All rights reserved.
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