平面压痕的极限开裂角与临界载荷

doi:10.3696/j.issn.1006-396X.2011.02.020

石油化工高等学校学报 ›› 2011, Vol. 24 ›› Issue (2): 76-78.DOI: 10.3696/j.issn.1006-396X.2011.02.020

平面压痕的极限开裂角与临界载荷

关生祥,王晓华^*

辽宁石油化工大学机械工程学院,辽宁抚顺113001

收稿日期:2011-03-02 修回日期:2011-03-28 出版日期:2011-04-25 发布日期:2011-04-25
作者简介:关生祥(1961 -), 男, 辽宁清原县
基金资助:
国家自然科学基金项目(50771052 ;50971068)

Ultimate Cracking Angle and Critical Load for Flat Initiation

School of Mechanical Engineering, Liaoning Shihua University, Fushun Liaoning 113001, P. R. China

Received:2011-03-02 Revised:2011-03-28 Published:2011-04-25 Online:2011-04-25

摘要/Abstract

摘要： 当矩形平端刚性压头作用在无摩擦弹性基体的表面时, 在基体表面生成一个平面压痕, 同时在压痕边界处的近表面诱生奇异应力场, 该奇异应力场的奇异性与裂纹尖端I -型应力场的奇异性同价, 使平面压痕的表面产生断裂型开裂。利用能量释放率原理, 分析压痕边界断裂开裂的极限开裂角、极限开裂载荷等相关问题。

关键词: 压痕应力强度因子 , 压痕断裂 , 断裂力学

Abstract:

When a frictionless elastic substrate was subject to indentations by the rectangular flat-ended, rigid indenter punch, a plane indentation was generated in the substrate surface. While the indentation boundary near the surface induced singular stress field. The singular stress field of the singularity was equivalent of the crack tip I-type. So that the surface of the indentation fracture plane generated type crack. By using the principle of energy release rate, the indentation cracking ultimate boundary cracking angle, critical cracking load and other related issues were analysised.

Key words:

Indentation stress intensity factor, , Indentation fracture, , Fracture mechanics

关生祥,王晓华. 平面压痕的极限开裂角与临界载荷[J]. 石油化工高等学校学报, 2011, 24(2): 76-78.

GUAN Sheng-xiang， WANG Xiao-hua. Ultimate Cracking Angle and Critical Load for Flat Initiation[J]. Journal of Petrochemical Universities, 2011, 24(2): 76-78.

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[3]	王晓华,段大文,谢禹钧. 圆柱壳周期阵列压痕应力强度因子[J]. 石油化工高等学校学报, 2011, 24(5): 80-82.
[4]	谢禹钧，王伟，王晓华，蔡永梅. 平面压痕开裂极限临界载荷与开裂角[J]. 石油化工高等学校学报, 2010, 23(3): 68-71.

平面压痕的极限开裂角与临界载荷

Ultimate Cracking Angle and Critical Load for Flat Initiation

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