Stress Intensity Factors for Center Crack in Sectional Ⅰ -Beam

Journal of Liaoning Petrochemical University ›› 2006, Vol. 26 ›› Issue (2): 63-65.

Previous Articles Next Articles

Stress Intensity Factors for Center Crack in Sectional Ⅰ -Beam

School of Mechanical Engineering , Liaoning University of Petroleum & Chemical Technology ,Fushun Liaoning 113001, P .R .China

Received:2005-12-14 Published:2006-02-25 Online:2006-02-25

工字型截面梁腹板中心裂纹的应力强度因子

尤国武, 谢禹钧^＊

辽宁石油化工大学机械工程学院, 辽宁抚顺113001

作者简介:尤国武(1965-), 男(满族), 辽宁抚顺市, 工程师,在读硕士。

Abstract

Abstract:

　 The Ⅰ -beam is a widely used structure in engineering .Any crack in it may cause the structure failure .Ⅰ -beam with cracks relates to typical three -dimensional finite boundary problem .It is difficult to determine the stress intensity factors by using the traditional method .A new method to determine stress -intensity was proposed, which applied release rate of non -spontaneous extending energy to solving stress-intensity factors of center cracks in section I -beam under the uniformly distributed load.The relationship between the G ^＊ integral of release rate of non -spontaneous ex tending energy and stress -intensity factors w as given. The relationships among G^＊ integral , load, geometry parameters and machine function parameters were provided .Furthermore , the stress-intensity factor of center cracks in sectional Ⅰ -beam was obtained.

Key words: 　Ⅰ -beam , 　Stress intensity factor , 　Crack , 　Energy release rate

摘要： 工字型梁是工程中最常见的结构之一。其中的任何裂纹都将成为结构断裂失效的隐患。带有裂纹的工字型梁是典型的三维有限边界问题, 用经典方法求解其裂纹的应力强度因子通常是相当困难的。利用裂纹非自发扩展能量释放率得到一个求解均布载荷作用下工字型截面梁中心裂纹应力强度因子的一个新方法。给出了工字型截面梁裂纹非自发扩展能量释放率G ^＊积分与应力强度因子的关系, 同时也给出了G^＊积分与载荷、几何参量以及机械性能参数的关系, 进而得到工字型截面梁腹板中心裂纹的应力强度因子。

关键词: 工字型梁, 　应力强度因子, 　裂纹, , 能量释放率

YOU Guo -w u,XIE Yu -jun. Stress Intensity Factors for Center Crack in Sectional Ⅰ -Beam[J]. Journal of Liaoning Petrochemical University, 2006, 26(2): 63-65.

尤国武, 谢禹钧. 工字型截面梁腹板中心裂纹的应力强度因子[J]. 辽宁石油化工大学学报, 2006, 26(2): 63-65.

[1]	Yanbin CAO, Ming LIU, Lushan WANG, Kun WANG, Wei CHU, Aiqing MA, Fei WANG. Laboratory Physical Simulation of Steam Flooding Heavy Oil Hydrothermal Cracking Upgrading Behavior [J]. Journal of Liaoning Petrochemical University, 2023, 43(5): 34-41.
[2]	Junchi Li, Fei Xie. Study of Stress Corrosion Cracking Behavior of X70 Pipeline Steel in CO₂ Enhanced Mining Environment [J]. Journal of Liaoning Petrochemical University, 2023, 43(1): 38-42.
[3]	Zhiwei Zhao, Wenquan Jiang, Junfeng Guo, Yanhai An, Zhi Li, Yao Zhang. Crack Failure Analysis of Torch Burner Pipeline in Petrochemical [J]. Journal of Liaoning Petrochemical University, 2022, 42(5): 80-83.
[4]	Yang Lijian， Liang Chengzhuang， Gao Songwei， Liu Bin. Simulation and Experimental Research on the Crack Defect of Pipeline Magnetic Flux Leakage Inspection [J]. Journal of Liaoning Petrochemical University, 2020, 40(6): 59-63.
[5]	Duo Yili， Zhao Shengnan， Hai Jun， Xie Yujun. Method for Calculating Stress Intensity Factors for Cracked Bending Beams [J]. Journal of Liaoning Petrochemical University, 2018, 38(04): 72-76.
[6]	Zheng Xingyu，Xie Yujun. Mixed ModeⅠ-Ⅱ Crack Side-Branching and Kinking when K_Ⅰ=K_Ⅱ [J]. Journal of Liaoning Petrochemical University, 2018, 38(03): 62-66.
[7]	Wang Chong, Zhao Dezhi, Song Guanlong, Li Ying, Yang Zhanxu, Zhao Yun, Zhang Wenjun. Hydrothermal Cracking Reaction Mechanism of the Residue under the Effect of Ultrasonic Wave [J]. Journal of Liaoning Petrochemical University, 2018, 38(02): 9-12.
[8]	Xu Chengxiang, Wang Wei. Analysis on Crack Tip's Stress Intensity Factor of Pipe Surface  Oblique Crack Based on the Internal Pressure Effect [J]. Journal of Liaoning Petrochemical University, 2017, 37(4): 53-56.
[9]	Fu Liang,Zhang Guofu,Liu Dan. Three Reminders Pressure Inlet Filter Short Cracking Failure Analysis [J]. Journal of Liaoning Petrochemical University, 2017, 37(2): 48-53.
[10]	Liu Hai， Shi Cunpeng， Pan Yi， Leng Jun， Xu Zijian. Electrolytic Simulation Experiment of Fractured Multilateral Horizontal Well [J]. Journal of Liaoning Petrochemical University, 2015, 35(3): 43-46.
[11]	Shen Yunsheng， Ma Haiyan， Wen Bo， Song Shen， Lian Wei. Experimental Research of Shale Oil Processing Technology [J]. Journal of Liaoning Petrochemical University, 2015, 35(1): 20-23.
[12]	Zhao Long， Zhang Deqi. The Optimization for Grouting Hole of Concrete-Filled Steel Tubular Stent [J]. Journal of Liaoning Petrochemical University, 2015, 35(1): 54-57.
[13]	GONG Xue, XIE Yujun. alculation of Stress Intensity Factors for Circumferential Cracks in the Quick Opening Closure [J]. Journal of Liaoning Petrochemical University, 2013, 33(1): 82-85.
[14]	GONG Xue， XIE Yu-jun, LIU Fu-min. Calculation of Stress Intensity Factor for Fast-Opening Blind [J]. Journal of Liaoning Petrochemical University, 2012, 32(4): 80-82.
[15]	YUAN Meng-meng, HAN Dong-yun, SHI Wei-wei, JIANG Zhao-kun. Denitrification Refining of Shale Gas Oil and Its Influence on Catalytic Cracking Performance [J]. Journal of Liaoning Petrochemical University, 2011, 31(3): 31-33.

Stress Intensity Factors for Center Crack in Sectional Ⅰ -Beam

工字型截面梁腹板中心裂纹的应力强度因子

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics