高速増殖炉容器の耐震座屈設計法に関する研究 : 第4報,熱ラチェット変形が円筒の曲げ座屈に及ぼす影響

概要

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Buckling tests for cylinders with a thermal ratchetting deformation similar to the elephant-foot-type buckling mode in bending were carried out to evaluate the effects of this type of imperfection on buckling strength in bending. Test results show that the degradation of buckling load for cylinders with thermal ratchetting deformations is rather small because of the material hardening accompanied by the progress of ratchetting deformation. Numerical analyses considering material hardening and ratchetting deformation show that the above mentioned test results can be explained analytically, and that the degradation of buckling load without material hardening is nearly the same as the effects of axisymmetric geometrical imperfection on buckling strength in bending.
社団法人日本機械学会の論文
1995-02-25