Regular fracture control of pressed notch bar under three-point bending

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	Regular fracture control of pressed notch bar under three-point bending
	Yan, Changfeng; Li, Youtang; Jin, Wuyin; Wu, Lixiao; Huang, Hua
	2008
会议日期	August 27, 2007 - August 29, 2007
会议地点	Urumqi, China
关键词	Control Crack propagation Cracks Fracture Fracture control Fracture section Normal stress Pressed notch Three point bending
卷号	33-37 PART 1
页码	61-66
英文摘要	A new method for fabricating crack is introduced by pressing the wedge on bar. The path of the crack propagation is not regular when the ratio of length and diameter is less than 1.8 on the symmetrical support. The load of the wedge for pressing the notch is given in this paper. The 2-D finite element is applied to simulate the crack propagation by the maximum normal stress theory. The experimental results show that the quality of the fracture section will vary with the span on the three-point bending. In order to control the crack propagation along the desired section regularly, the asymmetrical three-point bending is proposed. The simulation results show that when the difference of the two spans is between 11 and 22 in asymmetrical three-point bending under the parameters condition, the good quality of the section will be obtained, and the experimental results also strong support the conclusion.
会议录	Advanced Materials Research
会议录出版者	Trans Tech Publications
语种	英语
ISSN号	10226680
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/116857]
专题	机电工程学院学报编辑部
作者单位	College of Mechano-Electronic Engineering, Lanzhou University of Technology, Lanzhou 730050, China
推荐引用方式 GB/T 7714	Yan, Changfeng,Li, Youtang,Jin, Wuyin,et al. Regular fracture control of pressed notch bar under three-point bending[C]. 见:. Urumqi, China. August 27, 2007 - August 29, 2007.