コンプライアンス可変型構成方程式の拡張と三城目安山岩の一軸圧縮・引張強度試験による検討

概要

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A constitutive equation of variable compliance type has been proposed by Okubo et al. in 1987. The equation is simple and its parameters are relatively easy to obtain. The equation can be applicable to an extensive range of loading conditions including creep, however, experimental result in primary creep region in which strain rate is decreasing with time does not conform well to the calculated result.Okubo & Fukui proposed a constitutive equation especially focusing on low stress level creep and primary creep region. Recently, old one proposed in 1987 and new one were combined to extend an applicable range, and calculated results were compared with the experimental data of creep for validation of the proposed constitutive equation.In this study, the constitutive equation proposed by Okubo et al. is tested against results of uniaxial compression and tension tests. It can be said that experimental results of uniaxial compression tests including the loading rate dependency of compressive strength can be well simulated by the proposed equation. The equation is also tested against the results of uniaxial tension tests and possible applicability of the equation to tensile stress field is discussed.
社団法人資源・素材学会の論文
2003-09-25