Stress Intensity Factor for Different Panel Under Indentations

doi:10.3969/j.issn.1006-396X.2012.04.017

Journal of Petrochemical Universities ›› 2012, Vol. 25 ›› Issue (4): 77-80.DOI: 10.3969/j.issn.1006-396X.2012.04.017

1.College of Pipeline and Civil Engineering，China University of Petroleum(East China), Qingdao Shandong 266555，P.R.China； 2. School of Mechanical Engineering, Liaoning Shihua University，Fushun Liaoning 113001，P. R. China

Received:2012-04-10 Published:2012-08-25 Online:2012-08-25

不同基体平面压痕应力强度因子

蔡永梅^1,2,王伟²,谢禹钧²

(1.中国石油大学(华东)储运与建筑工程学院,山东青岛266555;2.辽宁石油化工大学机械工程学院,辽宁抚顺113001)

作者简介:蔡永梅（１９８１－），女，宁夏石嘴山市，讲师，在读博士
基金资助:
国家自然科学基金（５０７７１０５２，５０９７１０６８）；辽宁省
自然基金项目（２００８２１８８）；辽宁省教育厅重点实
验室项目（ＬＳ２０１０１００）。

Abstract

Abstract: Numerical analysis of the stress intensity factor (SIF) induced by indentations was proposed based on the conservation integral. Simulation of the intensification of the stress fields by software of finite element method. The stress intensity factor for such stress fields was calculated. The SIF with different elastic modulus and poisson ratio was compared, focused on the relation between SIF and fracture toughness, and investigated the change law. Use the numerical result to researching damage behavior of material and testing the mechanical properties in engineering.

Key words: Fracture, Indentation, Stress intensity factor, Elastic modulus, Numerical analysis

摘要： 基于经典守恒积分方法对刚性压头冲压平板情况下应力强度因子（ＳＩＦ）进行数值分析，应有有限元软件模拟冲压形成的奇异应力场，并计算应力强度因子。比较了几组具有不同弹性模量和泊松比的应力强度因子，研究其与断裂韧性之间关系得出变化规律。工程中可利用奇异应力场数值分析结果研究材料的破坏行为、测试材料的机械性能。

关键词: 断裂 , 冲压 , 应力强度因子 , 弹性模量 , 数值分析

CAI Yong-mei,WANG Wei,XIE Yu-jun. Stress Intensity Factor for Different Panel Under Indentations[J]. Journal of Petrochemical Universities, 2012, 25(4): 77-80.

蔡永梅,王伟,谢禹钧. 不同基体平面压痕应力强度因子[J]. 石油化工高等学校学报, 2012, 25(4): 77-80.

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