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安藤 勝訓; 手塚 泰治*; 中村 敏夫*; 大川 智宏*; 江沼 康弘*; 川崎 信史; 月森 和之
Proceedings of 2011 ASME Pressure Vessels and Piping Conference (PVP 2011) (CD-ROM), 9 Pages, 2011/07
Estimation method of the buckling criterion of cantilever type pipes subjected to lateral displacements is proposed. We define the criterion of the deformation controlled buckling based on bending strain at buckling portion. Then finite element method is used to estimate the displacement and bending strain at local buckling portion on the displacement controlled buckling. All of the finite element analysis are carried out by using the material properties of Mod.9Cr-1Mo and 316FR. As the result, an equation which represents the limitation for displacement controlled buckling of cantilever type pipes is proposed.
安藤 勝訓; 手塚 泰治*; 中村 敏夫*; 大川 智宏*; 江沼 康弘*; 川崎 信史; 月森 和之
Proceedings of 2011 ASME Pressure Vessels and Piping Conference (PVP 2011) (CD-ROM), 8 Pages, 2011/07
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 550C. 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.
安藤 勝訓; 手塚 泰治*; 佐藤 啓介*; 川崎 信史; 江沼 康弘*; 月森 和之
日本機械学会関東支部茨城講演会2009講演論文集, p.171 - 172, 2009/08
高速炉の配管設計では熱膨張反力による2次荷重が主たる荷重となることから、これによる座屈を適切に制限する必要がある。このため、実証炉の冷却系配管材として採用予定の改良9Cr-1Mo鋼について変位制御型の配管座屈の制限について検討した。316FRの実験結果に基づき制定された同制限に対して、改良9Cr-1Mo鋼配管での適用性について有限要素法解析により検証し、316FRの制限式と同様の考え方で座屈制限式を策定できる見通しを得た。また、この解析検討の内容の妥当性を検証するために変位制御にて改良9Cr-1Mo鋼配管の座屈試験を実施した。座屈試験の結果は解析結果とよく一致したことから、解析に基づき定めた改良9Cr鋼の変位制御型の座屈制限は妥当であるとの見通しを得た。