Surface Pressure and Shear Stress Fields within a Frictional Contact on Rubber

Danh, Toan Nguyen; Paolino, Pierdomenico; Audry, Marie-Charlotte; Chateauminois, A.; Frétigny, Christian; Chenadec, Yohan Le; Portigliatti, Maude; Barthel, Étienne

doi:10.1080/00218464.2011.557340

Cited by 42 publications

(52 citation statements)

References 12 publications

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“…Deladi et al [14] modeled the static friction for contact between rough rubber and metal surfaces. As described in several works by Barquins et al [15,16], Savkoor [17,18] or more recently by Scheibert et al [19] or Audry and co-workers [20], the static friction of rubber contacts involves complex peeling and micro-slip phenomena which deserve a fracture mechanics description.…”

Section: Introductionmentioning

confidence: 98%

“…As described in several works by Barquins et al [15,16], Savkoor [17,18] or more recently by Scheibert et al [19] or Audry and co-workers [20], the static friction of rubber contacts involves complex peeling and micro-slip phenomena which deserve a fracture mechanics description. Moreover, rubber-like materials sliding against rigid metals under wet conditions is a common process for many engineering applications [21][22][23][24].…”

Section: Introductionmentioning

confidence: 98%

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The Reduction of Static Friction of Rubber Contact under Sea Water Droplet Lubrication

2017

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Abstract:In this work, a series of experimental tests is carried out in laboratory conditions which set the rubber compound (soft and stiff), the normal load, and the direction of propagation of sea water droplets into the interface of rubber-steel pipe contact as variables. The results show that the maximum static frictions (F) of rubber-pipe contacts increase as the normal load increases in both dry and lubricating conditions, and the values of F for the softer rubber are higher than that for the stiffer rubber. However, significant reduction in static friction is found due to the lubrication of sea water droplets. The influence of lubrication is stronger when the droplets propagate into the contact interfaces at the tail edge than that at the front edge. Capture sequences of the contact region facilitate the lubrication of seawater droplets by accelerating the progress of separation in the contact interfaces, thus reducing the static friction force. This investigation improves our understanding of the lubrication of sea water droplets during pipe-laying operation, and it will help us to conduct further research on the accuracy and safety of offshore engineering.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

The Reduction of Static Friction of Rubber Contact under Sea Water Droplet Lubrication

2017

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“…Once imaged in transmission with a white light, the pattern appears as a network of dark spots which are easily detected. Full details regarding the design and fabrication of PDMS substrates are provided in [1].…”

Section: Methodsmentioning

confidence: 99%

“…As an example, one can cite the local friction of smooth rubbers surfaces with statistically rough rigid bodies. At the scale of the macroscopic contact, the finite sizes of the contacting bodies induce in-plane surface strains which can easily exceed 0.2 can under the action of a frictional stress [1,2]. At the microscopic scale, this implies that single micro-asperity contacts occur locally on a pre-stretched rubber surface.…”

Section: Introductionmentioning

confidence: 99%

Contact of a spherical probe with a stretched rubber substrate

Frétigny

Chateauminois

2017

Phys. Rev. E

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We report on a theoretical and experimental investigation of the normal contact of stretched neoHookean substrates with rigid spherical probes. Starting from a published formulation of surface Green's function for incremental displacements on a pre-stretched, neo-Hookean, substrate (L.H. Lee J. Mech. Phys. Sol. 56 (2008) 2957-2971), a model is derived for both adhesive and non-adhesive contacts. The shape of the elliptical contact area together with the contact load and the contact stiffness are predicted as a function of the in-plane stretch ratios λx and λy of the substrate. The validity of this model is assessed by contact experiments carried out using an uniaxally stretched silicone rubber. for stretch ratio below about 1.25, a good agreement is observed between theory and experiments. Above this threshold, some deviations from the theoretical prediction are induced as a result of the departure of the mechanical response of the silicone rubber from the neo-Hokeean description embedded in the model.

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“…Deladi et al [17] proposed a static contact model to predict friction between rough rubber and metal surfaces. Furthermore, the fracture mechanics that were developed by Maugis et al [18], Savkoor [19] and more recently to Scheibert et al [20] or Audry and co-workers [21] have been used to discuss the separation of interfaces in the rubber-static frictional contact.…”

Section: Introductionmentioning

confidence: 99%

The Static Frictional Behaviors of Rubber for Pipe-Laying Operation

et al. 2017

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Featured Application: This research aims to reveal the static frictional behavior of rubber pipe contact systems during a pipe-laying operation. The testing results of friction facilitate the selection of appropriate contact pairs for tribological optimal design of the tensioner. The discussion about the instability of static friction is helping us to avoid pipe slipping accidents and to maintain accuracy of pipeline installations.Abstract: Experimental research is carried out to reveal the static frictional behaviors of rubber pipe contact systems. This research is motivated by deep water pipe-laying operations where rubber blocks are used to clamp the pipe to supply sufficient static friction. Within this context, a friction testing instrument has been designed to mimic a situation of the beginning of the pipe-laying installation. Using this instrument, the maximum static friction forces (F) of a rubber pipe contact system are tested. The results show that the ultimate values of the static frictions fluctuate due to the increasing rate of the tangential load (F T ). The evolution of contact between rubber and polymethyl methacrylate (PMMA) pipe is observed to identify the formation and propagation of the folds within the apparent contact area. In addition, it is confirmed that the evolution of contact is influenced by the folds and creep of the rubber surface. The creep deformation takes primary effect in accelerating the separation of the interfaces of contact during relative high normal loads (20, 30, 40 N) and low increasing rate of F T ; whereas for all of the testing normal loads (10-40 N), the propagation of the folds release the energy which is stored in the interface of rubber when the increasing rate of F T is high. Therefore, the fluctuation of the maximum static friction of the contact system can be regarded as a consequence of interaction of the creep and folds. Furthermore, the instability of the coefficient of static friction in this test has been examined, and it indicated that the creep and folds could affect the static friction distinctly within a certain range of a normal load. This research is beneficial for arranging appropriate normal loads and laying speeds to avoid pipes slipping during a pipe-laying operation.

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Surface Pressure and Shear Stress Fields within a Frictional Contact on Rubber

Cited by 42 publications

References 12 publications

The Reduction of Static Friction of Rubber Contact under Sea Water Droplet Lubrication

The Reduction of Static Friction of Rubber Contact under Sea Water Droplet Lubrication

Contact of a spherical probe with a stretched rubber substrate

The Static Frictional Behaviors of Rubber for Pipe-Laying Operation

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