Direct Method를 이용한 평면골조의 극한해석에 관한 연구 ( A Study on the Limit Analysis of Planar Frames using Direct Method )

Two elasto-plastic beam element models are compared for the limit analysis of planar frames. One is a FEM beam element and the other is an elastic beam with elasto-plastic springs at both ends(EBEPS) developed for the limit analysis of planar frames. Direct Method is used for the limit analysis. In the point of accuracy, EBEPS is comparable with FEM beam model. However, EBEPS is superior to FEM beam model in efficiency.