炭素鋼の変動組合せ応力下のメカニカルラチェット変形挙動 : 第2報, 繰返しひずみ幅と重畳応力が同時に変動する場合

概要

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The strain accumulations are observed in the mechanical ratcheting in the direction of the stress component superposed upon cyclic stress. To clarify the effects of variations of 'superposed stress' and of strain amplitude on the behavior of strain accumulations, the ratcheting tests were carried out using thin-walled tubular specimens of a carbon steel under the condition that both axial strain amplitude and internal pressure were varied stepwisely or gradually with number of cycles. A parameter ψ which represented the loading history was introduced. A parameter ψ which represented the loading history was introduced. A constitutive equation in the mechanical ratcheting under varied stress conditions was proposed by use of the parameter ψ on the hypothesis of linear superposition of 'superposed stress'.
一般社団法人日本機械学会の論文
1985-02-25