[1]刘增堂.剝层磨损裂纹扩展机理[J].东南大学学报(自然科学版),1984,14(2):9-14.[doi:10.3969/j.issn.1001-0505.1984.02.002]
　Liu Zengtang.Mechanics of Crack Propagation in Delamination Wear[J].Journal of Southeast University (Natural Science Edition),1984,14(2):9-14.[doi:10.3969/j.issn.1001-0505.1984.02.002]
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剝层磨损裂纹扩展机理()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
14
期数:
1984年第2期
页码:
9-14
栏目:
本刊信息
出版日期:
1984-06-20

文章信息/Info

Title:
Mechanics of Crack Propagation in Delamination Wear
作者:
刘增堂
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Author(s):
Liu Zengtang
关键词:
应力强度因子;  裂纹扩展机理;  残余拉应力;  裂纹扩展速率;  实验数据;  亚表面;  滑动磨损;  塑性区;  裂纹尖端;  残余应力
分类号:
+
DOI:
10.3969/j.issn.1001-0505.1984.02.002
摘要:
本文对滑动磨损中亚表面的裂纹扩展过程进行了分析,提出了新的裂纹扩展机理。根据亚表面塑性区的弹性回复,证明了亚表面申存在着垂直于表面的残余拉应力;并论证了对裂纹尖端应力强度因子的贡献,计算了dc/dN值。与各种裂纹扩展机理,特别是Fleming和Suh的理论进行了对照。发现他们所预计的dc/dN值和实验数据相差可达若干数量级,而本文所计算的数据与实验数据符合得很好。
Abstract:
In this paper, an analysis of subsurface crack propagation in sliding contact is presented, and a new mechanics of crack propagation is developed. According to the resilience of plastic’ area in subsurface, it is proved that in subsurface the residual stress normal to surface exists. The contribution to stress intensity factors for crack tip is discussed, and the values of dc/dN are calculated. As compared the new mechanics with various mechanics of crack propagation, especially with the theory proposed by Fleming and Suh, it is found that the deviation between the values of dc/dN predicted by them and experimental data, may be more than several orders of magnitude, while the results calculated in this paper, agree reasonably well with experimental data. On this basis, an equation to predict wear rate may be derived.

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[1]罗睿,黄晓明,陆原,等.基层对层间连续路面应力强度因子影响的研究[J].东南大学学报(自然科学版),2001,31(3):61.[doi:10.3969/j.issn.1001-0505.2001.03.015]
　Luo Rui,Huang Xiaoming,Lu Yuan,et al.Influence of Base Layer on the Stress Intensity Factor of Pavement with Continual Layers[J].Journal of Southeast University (Natural Science Edition),2001,31(2):61.[doi:10.3969/j.issn.1001-0505.2001.03.015]

更新日期/Last Update: 2013-05-01