Local Thickening and Friction Reducing to Constant Resistance in a Prefolded Energy Absorption Device
Joint Authors
An, Dong
Lv, Xiangfeng
Xu, Hailiang
Song, Jiaqi
Song, Yimin
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-07-27
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
The energy absorption support for impact resistance used in mining engineering is a prefolded energy absorption device.
In this paper, through the quasistatic compression test and numerical simulation, the relationship between the deformation process, load-displacement curve, and plastic strain of the original prefolded energy absorbing device is studied.
It is found that the concave side stiffness has an obvious effect on the first and second descending sections of the load-displacement curve, and the friction coefficient has an obvious effect on the second ascending section of that.
In order to make the prefolded energy absorption device reach the state of constant resistance where the reaction load does not fluctuate or the fluctuation is small in the crushing process, the plastic strain is restrained by thickening the local area of the concave side, which effectively reduces the descending amplitude of the load-displacement curve.
Whether continuoues deformation occurs is affected by the friction coefficient.
Finally, a constant resistance energy absorption device is designed by thickening the concave side and reducing the friction coefficient.
Compared with the original structure, the maximum bearing capacity of the constant resistance energy absorption device is basically unchanged, the average bearing capacity is increased by 29%, the total energy absorption is increased by 111%, the specific energy absorption is increased by 119%, and the load-displacement curve variance is reduced to 3% of the original structure.
American Psychological Association (APA)
Xu, Hailiang& Song, Jiaqi& An, Dong& Song, Yimin& Lv, Xiangfeng. 2020. Local Thickening and Friction Reducing to Constant Resistance in a Prefolded Energy Absorption Device. Shock and Vibration،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1210444
Modern Language Association (MLA)
Xu, Hailiang…[et al.]. Local Thickening and Friction Reducing to Constant Resistance in a Prefolded Energy Absorption Device. Shock and Vibration No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1210444
American Medical Association (AMA)
Xu, Hailiang& Song, Jiaqi& An, Dong& Song, Yimin& Lv, Xiangfeng. Local Thickening and Friction Reducing to Constant Resistance in a Prefolded Energy Absorption Device. Shock and Vibration. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1210444
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1210444