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Chapter 9 Buckling and Local Buckling of Tubular Members               193


                  in the simplified analysis. Applying the Plastic Node Method for the post-ultimate strength
                  analysis is a basic idea that is presented in Ueda and Fujikubo (1986). These remain as ideas in
                  progress.




                                            -:    ISUM
                                            ---:   FEM


                                                                       t













                                               50   100   150   2W   250   300
                                                                 n(m1
                                                  (a)  e1D  =  118

                                      -
                                            lSUn
                                           :











                            50   1W   150   200   250   300
                                              *(m)

                               (b) el0  * 114                     (cl e1u - 318
                             Figure 9.28  Load Lateral Deflection Curves of H Series Specimens
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