[1]张嘉振,沙宇,张大为,等.压应力对铝合金长短疲劳裂纹尖端应力影响有限元分析[J].哈尔滨理工大学学报,2011,(05):21-24.
 ZHANG Jia-zhen,SHA Yu,ZHANG Da-wei.Elastic-plastic Finite Element Analysis of the Effect of the Compressive Loading on Fatigue Crack Tip Stress[J].哈尔滨理工大学学报,2011,(05):21-24.
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压应力对铝合金长短疲劳裂纹尖端应力影响有限元分析()
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《哈尔滨理工大学学报》[ISSN:1007-2683/CN:23-1404/N]

卷:
期数:
2011年05期
页码:
21-24
栏目:
机械动力工程
出版日期:
2011-10-25

文章信息/Info

Title:
Elastic-plastic Finite Element Analysis of the Effect of the Compressive Loading on Fatigue Crack Tip Stress
作者:
张嘉振; 沙宇; 张大为;
哈尔滨理工大学机械动力工程学院; 哈尔滨电机厂有限责任公司装备部;
Author(s):
ZHANG Jia-zhen1SHA Yu1ZHANG Da-wei2
1.School of Mechanical and Power Engineering,Harbin University of Science and Technology,Harbin 150080,China;2.Harbin Electric Machinery Company Limited Equipment Department,Harbin 150040,China
关键词:
有限元 疲劳裂纹 压应力 塑性区 应力强度因子
Keywords:
finite element analysis fatigue crack compressive loading plastic zone stress intensity factor
分类号:
O346.1
文献标志码:
A
摘要:
应用弹塑性有限元方法,研究压应力对铝合金长短疲劳裂纹尖端应力场、塑性区的影响.分别建立两个具有长短中心穿透裂纹高强铝合金板的有限元模型,进行拉压加载模拟分析.结果表明,压应力对铝合金长短疲劳裂纹尖端应力有显著影响,相同的应力强度因子条件下,在一拉-压加载周期,当拉应力减小到零时裂纹尖端应力不为零,裂纹尖端应力对裂尖的挤压作用产生反向塑性区,裂尖反向塑性区随压应力的增加而增加,压应力的大小是决定铝合金裂纹尖端应力和裂纹尖端塑性区大小的主要因素,压应力对短裂纹的影响比长裂纹大.
Abstract:
A detailed elastic-plastic finite element analysis of the effect on crack tip plasticity is studied.The crack tip parameters of aluminum alloy long-short crack effect on compressive loading in a tension-compression loading are analyzed.In this paper two centre-cracked panel finite element models are established.The analysis shows that the compressive loading has a significant contribution towards the crack tip plasticity and the crack tip stress at the same stress intensity factor.In a tension-c...

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备注/Memo

备注/Memo:
黑龙江省教育厅科学技术研究2010年度面上项目(11551082)
更新日期/Last Update: 2012-04-11