STUDY ON INFLUENCE FACTOR OF PLASTIC LIMIT ANALYSIS BASED ON ELASTIC COMPENSATION FINITE ELEMENT METHOD
Elastic compensation method (ECM) is an effective plastic limit analysis method for engineering structures. This paper presents the parametric study of limit loads for beam and frame structures by Elastic Compensation based Finite Element Method (ECFEM). The influence of some important parameters on the precision of results achieved by ECFEM is examined by comparison of the presented method with analytical solution and the Elasto-Plastic Incremental Method. The failure mode and ultimate load of the beam and frame structures are calculated. Examples show that leading factors affecting the results of ECFEM include element mesh density, tolerant convergence error and regulation factor in limit analysis of structures. They also demonstrate that the ECFEM is simple and efficient compared with the Elasto-Plastic Incremental Method. The recommendation values for the important parameters are also proposed based on the parametric study and numeric analysis.
Plastic limit analysis Elastic compensation finite element method Influence factor
Wei Zhang Lu-Feng Yang
School of Civil Engineering and Architecture, Guangxi University, Nanning 530004, P.R. China
国际会议
第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)
长沙
英文
190-195
2008-10-19（万方平台首次上网日期，不代表论文的发表时间）