Identification of Coulomb's friction coefficient in real contact conditions applied to a wire drawing process

Lazzarotto, L.; Dubar, Laurent; Dubois, A.; Ravassard, P.; Oudin, J.

doi:10.1016/s0043-1648(97)00080-x

Cited by 67 publications

(23 citation statements)

References 5 publications

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“…To carry out the optimization, the orthogonal experimental design is adopted and a L 16 (4 5 ) table is determined as given in Table 3, which requires 16 simulations at low-friction (m = 0.1) and 16 simulations at high-friction (m = 0.3) conditions. A twodimensional (2D) axisymmetric FE model in MSC (Marc) was built to run FE simulations under different friction conditions, and the velocity of spike forging die was assumed as 10 mm/s.…”

Section: Fe-based Design Of Experimentsmentioning

confidence: 99%

Investigation of tribological condition in cold forging using an optimized design of spike forging test

Zhao

2015

Advances in Mechanical Engineering

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The spike forging test is still commonly used although there are some new tribology test methods, but each designer would like to give their own parameters. Considering the spike height difference between low friction and high friction as the evaluation index, an optimal spike forging test developed using finite element simulations based on orthogonal optimization method and sensitivity analysis of tribological conditions of selected key design parameters was carried out. The spike height does not always monotonically decrease with the increase in friction factor in the scheme with improper parameters; therefore, the design of spike forging test should be critically evaluated before assessing tribological conditions. According to the optimized parameters, a simplified set-up of spike forging test was designed, and two retainers with a clearance fit and the billet with a chamfer were prepared to position the test billet. Finally, four different tribological conditions, including dry polytetrafluoroethylene lubricant, multipurpose grease, VG32 oil, and dry condition, in aluminum forging were chosen as a case study for the optimized design of spike forging test, and correspondingly, the lubricating effect was distinguished.

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Section: Fe-based Design Of Experimentsmentioning

confidence: 99%

Investigation of tribological condition in cold forging using an optimized design of spike forging test

Zhao

2015

Advances in Mechanical Engineering

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“…This index provides quick and reliable information on the evolution of friction. Correlation between lubrication index Li and the Coulomb's coefficient of friction can be found in [4].…”

Section: 1a Lubrication Index LImentioning

confidence: 99%

Effects of lubricant and lubrication parameters on friction during hot steel forging

et al. 2008

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“…For the absence of the friction coefficient, it often obtained from the experience and assumption value arbitrarily, so the simulation precision is less high than before. For these reason, the sensitivity analysis of the friction coefficient during the nozzle thermal structure calculation become more and more necessary in recent years, and the individual design test for the friction coefficient between two kinds of material under real work condition is also needed imminently [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Investigation on friction coefficient between Solid Rocket Motor nozzle throat components

Sheng

Shi

et al. 2011

The Proceedings of 2011 9th International Conference on Reliability, Maintainability and Safety

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The thermal structure characteristic of the Solid Rocket Motor (SRM) nozzle component under thermal and flow field is investigated by finite element method (FEM). The sensitivity of contact parameter of friction coefficient between multi-layer structures on thermo-structure coupled simulation is priority analyzed and the individual test of the friction coefficient between real material of carbon/carbon material and molded asbestos/phenolic material with temperature under real work condition is also designed. The numerical results and the experimental conclusions can provide some important value to the reliability design of nozzle thermal structure.

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Identification of Coulomb's friction coefficient in real contact conditions applied to a wire drawing process

Cited by 67 publications

References 5 publications

Investigation of tribological condition in cold forging using an optimized design of spike forging test

Investigation of tribological condition in cold forging using an optimized design of spike forging test

Effects of lubricant and lubrication parameters on friction during hot steel forging

Investigation on friction coefficient between Solid Rocket Motor nozzle throat components

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