H 形鋼材の非定常履歴単軸応力-歪関係式 (梗概) : 第 II 部実験式

概要

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A statistical analysis is conducted on the parameters characterizing a generalized Ramberg-Osgood representation of non-stationary hysteretic uniaxial stress-strain curves. It is shown that the sample correlation coefficients between the maximum preceding stress amplitude and the four parameters in two generalized Ramberg-Osgood equations are slightly higher than those in Part I. The sample regression lines and confidence intervals are derived. A pair of bi-nonlinear equations is proposed as a set of hysteretic uniaxial stress-strain relations. It is demonstrated that the proposed formulae provide practically acceptable predictions for the wide-flange steel treated in Part I. It is illustrated that the proposed formulae modified by a scaling factor reflecting virgin strain-hardening characteristics provide predictions of a good accuracy also for another SS41 steel.
社団法人日本建築学会の論文
1977-10-30