Crack criterion and fracture tests of structural steel

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	Crack criterion and fracture tests of structural steel
	Wang, Wan-Zhen
刊名	Gongcheng Lixue/Engineering Mechanics
	2008-05-01
卷号	25 期号:5 页码:27-31
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
ISSN号	10004750
英文摘要	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.
语种	中文
出版者	Tsinghua University, Tsinghua University Xueyan Plaza, 100084, China
内容类型	期刊论文
源URL	[http://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
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.