Crack criterion and fracture tests of structural steel

	Crack criterion and fracture tests of structural steel
	Wang, Wan-Zhen
	2008-05-01
发表期刊	Gongcheng Lixue/Engineering Mechanics
ISSN	10004750
卷号	25 期号:5 页码:27-31
摘要	In order to study the crack mechanism and fracture design theory of structural steel, generalized yield locus in the three-dimensional stress space is brought forward. Combining the theories of metal yielding and fracture in classical strength theory with those in damage mechanics, crack criterion of structural steel in the three-dimensional stress space is deduced based on the assumption of simultaneous yielding and fracture in the isotropic tensile stress field. In the fracture tests of rectangular steel plates with circular hole subjected to uniaxial tension with mean velocity, the load-displacement curves at initial cracking were accurately measured. Test results reveal that the first crack lies at the edge of the circular hole and spreads rapidly. By numerically simulating the stress field at initial cracking in the fracture tests, the applicability and accuracy of the crack criterion are comparatively verified.
关键词	Computer simulation Crack initiation Cracks Damage detection Fracture testing Tensile stress Three dimensional Crack criterion Generalized yield Numerical simulation Strength theory Structural steel
收录类别	EI
语种	中文
出版者	Tsinghua University, Tsinghua University Xueyan Plaza, 100084, China
EI入藏号	20082611336315
EI主题词	Steel
EI分类号	408.1 Structural Design, General - 421 Strength of Building Materials ; Mechanical Properties - 545.3 Steel - 723.5 Computer Applications
来源库	Compendex
分类代码	408.1 Structural Design, General - 421 Strength of Building Materials; Mechanical Properties - 545.3 Steel - 723.5 Computer Applications
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/111828
专题	兰州理工大学土木工程学院
作者单位	School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China
第一作者单位	土木工程学院
第一作者的第一单位	土木工程学院
推荐引用方式 GB/T 7714	Wang, Wan-Zhen. Crack criterion and fracture tests of structural steel[J]. Gongcheng Lixue/Engineering Mechanics,2008,25(5):27-31.
APA	Wang, Wan-Zhen.(2008).Crack criterion and fracture tests of structural steel.Gongcheng Lixue/Engineering Mechanics,25(5),27-31.
MLA	Wang, Wan-Zhen."Crack criterion and fracture tests of structural steel".Gongcheng Lixue/Engineering Mechanics 25.5(2008):27-31.