Experiment study and the influence of the stress state to structure steel fracture

doi:10.1109/ICETCE.2011.5774446

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	Experiment study and the influence of the stress state to structure steel fracture
	Sun, Yuping; Teng, Zunli; Li, Hui; Wang, Wuxing
	2011
会议录名称	2011 International Conference on Electric Technology and Civil Engineering, ICETCE 2011 - Proceedings
页码	2177-2179
出版者	IEEE Computer Society
摘要	In order to study crack mechanism in stress triaxiality and fracture design of structure steel, the fracture experiments and numerical simulations were performed on 8 Q345 notched bar. Test results showed that crack initiated at the edge of the hole and the minimum section of the notched bars, quickly propagating perpendicular to loading direction. And that had obviously shear fracture trace, the fracture plane was ductile rupture induced apparently by shear stress, Triaxial stress reaches maximum at most dangerous section thickness center point and the center of the location of the notch. Through the analysis of simulated fracture stress field to the bar with holes indicated that fracture strength of structural steel and stress triaxiality have close relations, Application fracture of stress field of regression analysis, the relation expression between the fracture strength and stress triaxiality is obtained. By taking the stress triaxiality m /e for basic physical quantity, further quantitative analysis show that structural steel fracture with the equivalent strain and fracture surface of the average stress triaxiality have close relations, based on regression analysis, get the corresponding relation curves. © 2011 IEEE.
关键词	Building materials Cracks Regression analysis Shear stress Steel construction Steel research Corresponding relations Fracture experiments Fracture strain Notched bar Physical quantities Relation expression Simulated fracture Stress triaxiality
DOI	10.1109/ICETCE.2011.5774446
收录类别	EI
语种	中文
EI入藏号	20112614105871
EI主题词	Fracture toughness
来源库	Compendex
分类代码	405.2 Construction Methods - 545.3 Steel - 922.2 Mathematical Statistics
引用统计	无
文献类型	会议论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/116292
专题	土木工程学院
作者单位	School of Civil Engineering, Lanzhou University of Technology, Lanzhou, China
第一作者单位	土木工程学院
推荐引用方式 GB/T 7714	Sun, Yuping,Teng, Zunli,Li, Hui,et al. Experiment study and the influence of the stress state to structure steel fracture[C]:IEEE Computer Society,2011:2177-2179.