Estimation of rubber sliding friction from asperity interaction modeling

Bui, Q. V.; Ponthot, Jean‐Philippe

doi:10.1016/s0043-1648(01)00864-x

Cited by 25 publications

(10 citation statements)

References 9 publications

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“…The model predicted a consistent positive correlation between roughness of the shoe or floor material and hysteresis friction. Typically, higher levels of roughness will result in higher deformation in contacting asperities [22][23][24], which results in additional energy loss in the viscoelastic material as it was observed in finite element model of Bui and Ponthot [44], experimental study of [22] and theoretical studies of [23,24]. The model predicted a lower adhesion friction with increasing shoe/floor roughness due to a reduction in the real contact area.…”

Section: Discussionmentioning

confidence: 80%

A Microscopic Finite Element Model of Shoe–Floor Hysteresis and Adhesion Friction

2015

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Few efforts have attempted to model the tribological interaction of shoe-floor contacting surfaces despite high prevalence of slipping accidents. Hysteresis and adhesion are the two main contributing mechanisms in shoe-floor friction at the microscopic asperity level. This study developed a three-dimensional microscopic finite element model of shoe-floor surfaces to quantify the effect of surface topography, shoe material properties and sliding speed on hysteresis and adhesion friction. The validity of the model was assessed by comparing model predictions to pin-on-disk experimental data. The model predicts that hysteresis friction increases for harder shoe materials, rougher shoe surfaces and rougher floor surfaces, while adhesion increases for smoother shoe surfaces, smoother floor surfaces and decreasing sliding speed. The effects of shoe material and floor roughness on the predicted hysteresis friction values were consistent with the experimental data. The effects of sliding speed on adhesion friction were moderately consistent with the experimental data. In addition, the predicted hysteresis magnitudes were consistent with experimental data. This model is a significant step toward development of a comprehensive shoefloor friction model.

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Section: Discussionmentioning

confidence: 80%

A Microscopic Finite Element Model of Shoe–Floor Hysteresis and Adhesion Friction

2015

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“…The friction of rubber depends on the viscous properties of the rubber compound 11. DPNR contains lower protein than NR‐LA.…”

Section: Resultsmentioning

confidence: 99%

PMMA blended and DPNR‐g‐PMMA coated DPNR and NR‐LA for dipping applications

Kovuttikulrangsie

Sahakaro

Intarakong

et al. 2004

J of Applied Polymer Sci

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Deproteinized natural rubber (DPNR) latex, prepared by digesting the protein within low-ammonia preserved concentrated (NR-LA) latex with alcalase enzyme at 40°C for 24 h, has the nitrogen content of 0.039 wt %. Poly(methyl methacrylate) (PMMA) and graft copolymers (DPNR-g-PMMA) latices were synthesized by emulsion polymerization technique for blending or coating on DPNR or NR-LA. Their general properties of natural and synthesized latices including compounded latex were verified. The friction coefficient of a homogenous film obtained from PMMA blended DPNR or NR-LA latex and a DPNR-g-PMMA coated DPNR and NR-LA film was found to be lower than those of films prepared by using DPNR or NR-LA latex. Furthermore, the DPNR-g-PMMA coated films had lower friction coefficient than those of PMMA blended films. The physical properties in terms of 300% modulus, tensile strength, and elongation at break of those rubbers were tested and confined to the ASTM 3377-78a and ASTM 3378-99 standards for dipping products of surgical gloves and examination gloves, respectively.

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“…The COF, which varies with the sliding speed, reaches a maximum value at a critical speed. 19,20 This critical speed can approximately be determined from v = lf, where v is the sliding speed, l is the length scale of the hard surface's roughness, and f is the frequency at which the damping factor is maximum. 18 Since the small intestine is a viscoelastic material, we postulate that the sliding friction on its surface is likely to be related to the internal friction of the intestine.…”

Section: Rubber Frictionmentioning

confidence: 99%

Experimental investigation into biomechanical and biotribological properties of a real intestine and their significance for design of a spiral-type robotic capsule

Zhou

Alici

Than

et al. 2014

Proc Inst Mech Eng H

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This article reports on the results and implications of our experimental investigation into the biomechanical and biotribological properties of a real intestine for the optimal design of a spiral-type robotic capsule. Dynamic shear experiments were conducted to evaluate how the storage and loss moduli and damping factor of the small intestine change with the speed or the angular frequency. The sliding friction between differently shaped test pieces, with a topology similar to that of the spirals, and the intestine sample was experimentally determined. Our findings demonstrate that the intestine's biomechanical and biotribological properties are coupled, suggesting that the sliding friction is strongly related to the internal friction of the intestinal tissue. The significant implication of this finding is that one can predict the reaction force between the capsule with a spiral-type traction topology and the intestine directly from the intestine's biomechanical measurements rather than employing complicated three-dimensional finite element analysis or an inaccurate analytical model. Sliding friction experiments were also conducted with bar-shaped solid samples to determine the sliding friction between the samples and the small intestine. This sliding friction data will be useful in determining spiral material for an optimally designed robotic capsule.

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Estimation of rubber sliding friction from asperity interaction modeling

Cited by 25 publications

References 9 publications

A Microscopic Finite Element Model of Shoe–Floor Hysteresis and Adhesion Friction

A Microscopic Finite Element Model of Shoe–Floor Hysteresis and Adhesion Friction

PMMA blended and DPNR‐g‐PMMA coated DPNR and NR‐LA for dipping applications

Experimental investigation into biomechanical and biotribological properties of a real intestine and their significance for design of a spiral-type robotic capsule

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