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Report No.

An Evaluation method for plastic buckling of cantilever type pipes controlled by displacement loads, 2; Verification of proposal method by buckling test

Ando, Masanori ; Tezuka, Taiji*; Nakamura, Toshio*; Okawa, Tomohiro*; Enuma, Yasuhiro*; Kawasaki, Nobuchika ; Tsukimori, Kazuyuki

Displacement controlled buckling tests are carried out with cantilever type pipes made of Mod.9Cr-1Mo steel fixed at lower end. The top of pipe is pulled by servo pulser machine. To confirm the effect of configuration, pipe thickness and length, four kinds of pipes are supplied for buckling test in the room temperature. In addition these tests, high temperature test is carried out at 550$$^{circ}$$C. Comparison of test results and FEA results proved that examinations are adequately predictable by FEA. The relationship between reaction force and displacement at pipe top is predicted accurately. Therefore proposed estimation method of buckling criterion, which is constructed by series of FEAs, is good corresponding to the test results.



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