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研究了屈服强度σ_y和裂纹相对深度a/W对COD降低系数m的影响.结果表明,m与σ_y之间呈双曲线关系;m与a/w之间呈抛物线关系.
The effect of yield strength σ_y and relative crack depth a / W on COD reduction coefficient m was studied. The results showed that there was a hyperbolic relationship between m and σ_y, and a parabolic relationship between m and a / w.