hysteresis friction
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2021 ◽  
pp. 1-28
Author(s):  
Van-Canh Tong ◽  
Gyungho Khim ◽  
Seong-Wook Hong

Abstract This paper presents the effects of carriage flexibility on the friction force in linear ball guides, which includes hydrodynamic rolling friction, elastic hysteresis friction, slip friction, and drag friction. To this end, we developed a computational model for the friction force in linear ball guides that accounts for the carriage flexibility. The model was validated through experiments, and the results prove that it provides more accurate friction-force estimates than the conventional model under the assumption of a rigid carriage. Subsequently, we examined the effects of external load, preload, and speed on the friction force. Among several friction components, hydrodynamic rolling friction makes a major contribution to the total friction force. Ball contact loads, which significantly vary with carriage flexibility, were found to influence the hydrodynamic rolling, elastic hysteresis, and slip friction forces. The proposed model considering carriage flexibility in linear ball guides is expected to find use in the design and operation of linear-ball-guide systems.



PLoS ONE ◽  
2021 ◽  
Vol 16 (1) ◽  
pp. e0245245
Author(s):  
Yun-Feng Liu ◽  
Ke Gu ◽  
Yi-Ming Shu ◽  
Xian-Lei Zhang ◽  
Xin-Xin Liu ◽  
...  

As a type of flexible impermeable material, a PVC geomembrane must be cooperatively used with cushion materials. The contact interface between a PVC geomembrane and cushion easily loses stability. In this present paper, we analyzed the shear models and parameters of the interface to study the stability. Two different cushion materials were used: the common extrusion sidewall and non-fines concrete. To simulate real working conditions, flexible silicone cushions were added under the loading plates to simulate hydraulic pressure loading, and the loading effect of flexible silicone cushions was demonstrated by measuring the actual contact areas under different normal pressures between the geomembrane and cushion using the thin-film pressure sensor. According to elastomer shear stress, there are two main types of shear stress between the PVC geomembrane and the cushion: viscous shear stress and hysteresis shear stress. The viscous shear stress between the geomembrane and the cement grout was measured using a dry, smooth concrete sample, then the precise formula parameters of the viscous shear stress and viscous friction coefficient were obtained. The hysteresis shear stress between the geomembrane and the cushion was calculated by subtracting the viscous shear stress from the total shear stress. The formula parameters of the hysteresis shear stress and hysteresis friction coefficient were calculated. The three-dimensional box-counting dimensions of the cushion surface were calculated, and the formula parameters of the hysteresis friction were positively correlated with the three-dimensional box dimensions.



2020 ◽  
Vol 4 (3) ◽  
pp. 57-63
Author(s):  
Leon Makharadze ◽  
Levan Gavasheli
Keyword(s):  


2020 ◽  
Vol 2020.57 (0) ◽  
pp. J011
Author(s):  
Yuta TSUKIMURA ◽  
Motoki KOBAYASHI ◽  
Shun TAKAHASHI ◽  
Yuji KODAMA ◽  
Yusuke MIZUNO ◽  
...  
Keyword(s):  


2020 ◽  
Vol 2020.56 (0) ◽  
pp. B4
Author(s):  
Shotaro Nara ◽  
Takumi Ito ◽  
Shun Takahashi ◽  
Yuji Kodama ◽  
Tetsuo Nohara


2018 ◽  
Vol 127 ◽  
pp. 165-176 ◽  
Author(s):  
Felix Hartung ◽  
Rebekka Kienle ◽  
Tobias Götz ◽  
Tobias Winkler ◽  
Wolfram Ressel ◽  
...  


2018 ◽  
Vol 9 ◽  
pp. 92-97 ◽  
Author(s):  
Tejas Bhave ◽  
Mohammad Tehrani ◽  
Muhammad Ali ◽  
Alireza Sarvestani


2018 ◽  
Vol 0 (1) ◽  
pp. 37-42
Author(s):  
Ольга Юріївна Олійник ◽  
Юрій Карлович Тараненко


2018 ◽  
Vol 2018.24 (0) ◽  
pp. OS0102
Author(s):  
Toshiyuki SANADA ◽  
Masayoshi ITO ◽  
Hirokuni HIYAMA ◽  
Akira FUKUNAGA


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