金属学报  1991, Vol. 27 Issue (4): 43-48

论文 本期目录 | 过刊浏览 |

用柔度法和数值法确定疲劳裂纹的闭合效应

程育仁;施晓锋;彭湘;侯炳麟

北方交通大学;北方交通大学;北方交通大学;北方交通大学

DETERMINATION OF FATIGUE CRACK CLOSURE EFFECT BY COMPLIANCE TECHNIQUE AND NUMERICAL METHOD

CHENG Yuren;SHI Xiaofeng;PENG Xiang;HOU Binglin Northern Jiaotong University; Beijing

程育仁;施晓锋;彭湘;侯炳麟. 用柔度法和数值法确定疲劳裂纹的闭合效应[J]. 金属学报, 1991, 27(4): 43-48.
, , , . DETERMINATION OF FATIGUE CRACK CLOSURE EFFECT BY COMPLIANCE TECHNIQUE AND NUMERICAL METHOD[J]. Acta Metall Sin, 1991, 27(4): 43-48.

摘要 参考文献 相关文章 Metrics 全文: PDF(468 KB)   摘要: 用柔度法中的裂尖应变法测定了车轴钢缺口裂纹的张开载荷。根据车轴钢的循环应力应变曲线,利用ADINA非线性有限元程序分析了裂尖附近的应力应变场。计算了缺口裂纹的张开载荷。柔度法和数值法的结果吻合。本文提出敏感点的概念,实测张开载荷的关键在于将应变片布置在敏感点上。实测和有限元计算证实敏感点是裂尖前方应变线性最佳而应变值又较大的位置。 关键词 ： 裂纹闭合效应,  柔度法,  数值法,  车轴钢     Abstract：The open load of notch crack of the axle steel was determined by themethod of crack-tip strain gauge in compliance technique, and on the basis of thecyclic stress-strain plot, calculated by the analysis of the stress-strain field aheadof crack-tip with aid of the ADINA non-linear finite element program as well. Bothresults are identical. A proposal of sensitive point, on which a strain gauge wasalready attached, was made as the key to determine open load. The measured andcalculated results certified that the sensitive point is the position of best linear andmore great strain ahead of crack tip. Key words： crack closure effect    compliance technique    numerical method    axle steel 收稿日期: 1991-04-18      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 程育仁 施晓锋 彭湘 侯炳麟 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1991/V27/I4/43 1 Suresh S, Ritchie R O. Int Metall Rev, 1984; 29: 445 2 Miller K J. Fatigue Fract Eng Mater Struct, 1987; 10: 75 3 井晓天,楼秉哲,沈福山.实验力学,1989;4:103 4 Sehitoglu H. Eng Fract Mech, 1985; 21: 329 5 Shin C S, Smith R A. Int J Fatigue, 1985; 7: 87H [1] 杨冰 赵永翔. 表面滚压对LZ50车轴钢疲劳短裂纹行为的影响[J]. 金属学报, 2012, 48(8): 922-928. [2] 郦建立;李晓刚;谢根栓;姚治铭;李劲;柯伟. 20G和2.25Cr—1Mo钢氢蚀后的疲劳性能[J]. 金属学报, 1995, 31(13): 26-30. [3] 苏翰生;吴仲棠. DD3单晶镍基合金蠕变-疲劳及寿命预测[J]. 金属学报, 1993, 29(1): 25-32. [4] 陈铮. 8090Al-Li合金疲劳短裂纹门槛值的研究[J]. 金属学报, 1990, 26(5): 62-65. Viewed Full text Abstract Cited   Shared      Discussed