速度に依存する繰返し塑性変形挙動 : 不規則障害物説に基づく表示

概要

論文の詳細を見る
A descriptive model for rate- or time-dependent behavior in cyclic plasticity, based on the random barriers theory, was presented by considering the velocity of a moving dislocation which was a member of movable dislocations and named as a "free dislocation" in this paper. Each of the stress- and strain-rate sensitivities on the stress-strain relation in each half cycle could be fairly estimated on the basis of an equilibrium equation derived in this study as a function of the stress-rate and the strain-rate at any stress level. Moreover, several types of transient behavior caused by a sudden change in the stress- or strain-rate might be uniformly expressed by each analysis of the processes in which a deficient or excess quantity of the free dislocations in this period came near to the moderate quantity decided by the stress and stress-rate.
1986-04-25