Metal ductility evaluation by flattening test: The geometry dependence

doi:10.1016/j.ijpvp.2019.01.007

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Metal ductility evaluation by flattening test: The geometry dependence
	Wang Y ; Yang GX ; Lei XQ(雷现奇); Li Q ; Rong LJ ; Hu XF ; Wei YJ(魏宇杰)
刊名	INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
	2019-02-01
卷号	170 页码:40-48
关键词	Flattening test Plastic deformability Gerson-Tvergaard-Needleman model Failure Finite element analysis
ISSN号	0308-0161
DOI	10.1016/j.ijpvp.2019.01.007
英文摘要	The reliability of pipes, tubes and liquid tanks (cylinders) is of paramount significance to our life. The typical way to examine the ability of those structures to undergo plastic deformation is to apply a flattening test. In this paper, we used the Gurson-Tvergaard-Needleman damage model and finite element simulations to capture the flattening of a tube made of typical pipe materials. We demonstrated how the tube thickness, radius, and length would affect the critical displacement where tube failure initiates. For flattening with platens, the failure displacement first increases with tube length and reaches a peak value, and it then decreases and converges to a constant value for a particular geometry. The failure initiates at the two edges of short tubes, but shifts to the center in intermediate tubes where the failure displacement maximizes. Failure then always starts from the middle in even longer tubes. In contrast, flattening with indenters exhibits two peaks in the compressible displacement vs. tube length curve. In the end, we proposed effective experimental strategies to obtain the intrinsic ability of tubes under plastic deformation. The results reported here could be employed to characterize the mechanical properties of materials for pipes, tubes and tanks, and they could also be applied to guide the engineering design of such structures.
分类号	二类
WOS关键词	ENERGY-ABSORPTION ; VOID NUCLEATION ; FRACTURE
WOS研究方向	Engineering, Multidisciplinary ; Engineering, Mechanical
语种	英语
WOS记录号	WOS:000459951000005
资助机构	National Natural Science Foundation of China (NSFC) [11425211] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22020200] ; National Key R&D Program of China [2017YFB1201302-10A] ; Basic Scientific Research Foundation of Beijing Jiaotong University [M14JB00130]
其他责任者	Wei, YJ
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/78488]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.{Wang, Yao、Yang, Guangxue、Li, Qiang、Wei, Yujie} Beijing Jiaotong Univ, Engn Res Ctr Struct Reliabil & Operat Measurement, Minist Educ, Beijing 100044, Peoples R China 2.{Lei, Xianqi、Wei, Yujie} Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China 3.{Rong, Lijian、Hu, Xiaofeng} Chinese Acad Sci, Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang Y,Yang GX,Lei XQ,et al. Metal ductility evaluation by flattening test: The geometry dependence[J]. INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING,2019,170:40-48.
APA	Wang Y.,Yang GX.,雷现奇.,Li Q.,Rong LJ.,...&魏宇杰.(2019).Metal ductility evaluation by flattening test: The geometry dependence.INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING,170,40-48.
MLA	Wang Y,et al."Metal ductility evaluation by flattening test: The geometry dependence".INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING 170(2019):40-48.