Low-cycle fatigue test and life assessment of carbon structural steel GB Q235B butt joints and cruciform joints

doi:10.1177/1369433218795292

IR > 土木工程学院

	Low-cycle fatigue test and life assessment of carbon structural steel GB Q235B butt joints and cruciform joints
	Fang, Zhao 1,2; Li, Aiqun 1,3; Shen, Sheng 1; Li, Wanrun1,4
	2019-02-01
发表期刊	Advances in Structural Engineering
ISSN	13694332
卷号	22 期号:3 页码:581-596
摘要	Axial low-cycle fatigue tests are conducted on transverse butt joint specimens and cruciform joint specimens made of carbon structural steel GB Q235B. The effect of slip between the specimens and the grips of the test machine is considered by the proposal of a linear slip model. The cyclic softening properties are studied by observing the variation of stress amplitude with cycles. The cyclic stress–strain curve and the strain–life curve for both kinds of specimens are obtained based on the fatigue test data, and the corresponding coefficients are fitted. In order to verify the fatigue test results, finite element models of specimens are established and the corresponding fatigue life assessment is conducted using the local stress–strain approach and the equivalent structural stress approach, respectively. The results show that the effect of slip is unneglectable and the established linear slip model is reasonable. The two kinds of specimens both show a strain softening property, but cruciform joint specimens experience sudden falls of stress amplitude during the test due to the damage of welded lines; cruciform joint specimens show an either one-side failure mode or two-side failure mode while butt joint specimens only show a one-side failure mode; the two-side failure mode tends to lead to shorter fatigue life, so in the design of cruciform joint, such failure mode should be avoided. © The Author(s) 2018.
关键词	Building materials Butt welding Capillary flow Failure modes Fatigue testing Steel construction Steel testing Welds Butt joints Cruciform joints Fatigue assessments Low-cycle fatigue tests slip
DOI	10.1177/1369433218795292
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Construction & Building Technology ; Engineering
WOS类目	Construction & Building Technology ; Engineering, Civil
WOS记录号	WOS:000456529600002
出版者	SAGE Publications Inc., United States
EI入藏号	20190406421323
EI主题词	Fatigue of materials
EI分类号	538.2 Welding ; 538.2.1 Welding Processes ; 545.3 Steel ; 631.1 Fluid Flow, General ; 951 Materials Science
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/150637
专题	土木工程学院
通讯作者	Li, Aiqun
作者单位	1.Southeast Univ, Sch Civil Engn, Nanjing 210000, Jiangsu, Peoples R China; 2.Kyoto Univ, Grad Sch Engn, Kyoto, Japan; 3.Beijing Univ Civil Engn & Architecture, Beijing Adv Innovat Ctr Future Urban Design, Beijing, Peoples R China; 4.Lanzhou Univ Technol, Inst Earthquake Protect & Disaster Mitigat, Lanzhou, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Fang, Zhao,Li, Aiqun,Shen, Sheng,et al. Low-cycle fatigue test and life assessment of carbon structural steel GB Q235B butt joints and cruciform joints[J]. Advances in Structural Engineering,2019,22(3):581-596.
APA	Fang, Zhao,Li, Aiqun,Shen, Sheng,&Li, Wanrun.(2019).Low-cycle fatigue test and life assessment of carbon structural steel GB Q235B butt joints and cruciform joints.Advances in Structural Engineering,22(3),581-596.
MLA	Fang, Zhao,et al."Low-cycle fatigue test and life assessment of carbon structural steel GB Q235B butt joints and cruciform joints".Advances in Structural Engineering 22.3(2019):581-596.