金属学报  1981, Vol. 17 Issue (5): 558-564

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韧带全面屈服之后的裂纹顶端断裂应力

邓枝生;汪德根

冶金工业部钢铁研究总院;冶金工业部钢铁研究总院

CRACK-TIP FRACTURE STRESS UNDER GENERAL YIELDING OF LIGAMENT

by Deng Zhisheng and Wang Degen (Central Iron and Steel Research Institute; Ministry of Metallurgical Industry)

邓枝生;汪德根. 韧带全面屈服之后的裂纹顶端断裂应力[J]. 金属学报, 1981, 17(5): 558-564.
, . CRACK-TIP FRACTURE STRESS UNDER GENERAL YIELDING OF LIGAMENT[J]. Acta Metall Sin, 1981, 17(5): 558-564.

摘要 参考文献 相关文章 Metrics 全文: PDF(546 KB)   摘要: 本工作在-100℃—室温的温度范围内验证了最大切应力断裂判据对于延性断裂是适用的。利用此判据和裂纹顶端临界断裂应力(σ_(yy))_c与温度基本无关的期律可以定性地解释J_c和δ_(p,c)对温度的关系。试验还表明平均断裂强度基本上与试样几何和缺口顶端曲率半径无关。 Abstract：The criterion of maximum shear stress for crack extension, namely, the critical fracture stress at the crack tip,(σ_(yy))_c=σ_F was verified to be applicable to the ductile fracture in the range between—100℃ up to room temperature.Considering the independence of this criterion and the critical fracture stress at crack tip upon temperature, the observed phenomena of which J_c decreases with decreasing temperature may be qualitatively explained. The specimen geometry and the curvature radii of notch root are not affected with the average fracture strength, but affected with the true fracture strain. Thereby, the fracture strength is probably an important descriptive parameter of mechanical properties of materials. 收稿日期: 1981-05-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 邓枝生 汪德根 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1981/V17/I5/558 [1] 邓枝生、陈篪,金属学报,14(1978) ,239． [2] 陈篪,金属学报,13(1977) ,57． [3] 冶金部钢铁研究院断裂韧性组,未发表资料,1976． [4] 陈篪等,工程断裂力学(上册),国防工业出版社,1977,p.405． [5] 陈篪等,金属断裂研究文集,冶金工业出版社,1978,p.53． [6] Knott, J. F., Fundamentals of Fracture Mechanics, Butterworths, London, 1973． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed