King, M.A., Blundell, D.J., et al.: Modelling studies of crystalline PEEK. Porras-Vazquez, A., Martinie, L., et al.: Independence between friction and velocity distribution in fluids. 114(30), 7952–7957 (2017)Įwen, J.P., Gattinoni, C., et al.: On the effect of confined fluid molecular structure on nonequilibrium phase behaviour and friction. Jadhao, V., Robbins, M.O.: Probing large viscosities in glass-formers with nonequilibrium simulations. Zhan, S., Xu, H., et al.: Molecular dynamics simulation of microscopic friction mechanisms of amorphous polyethylene. Moghadam, A.D., Omrani, E., et al.: Mechanical and tribological properties of self-lubricating metal matrix nanocomposites reinforced by carbon nanotubes (CNTs) and graphene – A review. Li, Y., Wang, Q., Wang, S.: A review on enhancement of mechanical and tribological properties of polymer composites reinforced by carbon nanotubes and graphene sheet: molecular dynamics simulations. Li, C., Browning, A.R., et al.: Atomistic simulations on multilayer graphene reinforced epoxy composites. Polymer 52, 2920–2928 (2011)įang, Q., Tian, Y., et al.: Revealing the deformation mechanism of amorphous polyethylene subjected to cycle loading via molecular dynamics simulations. Li, C., Strachan, A.: Molecular dynamics predictions of thermal and mechanical properties of thermoset polymer EPON862/DETDA. 42, 193–201 (2011)īarry, P.R., Chiu, P.Y., et al.: Effect of temperature on the friction and wear of PTFE by atomic-level simulation. Matter 21, 144201 (2009)Ĭhiu, P.Y., Barry, P.R., et al.: Influence of the molecular level structure of polyethylene and polytetrafluoroethylene on their tribological response. Friction 6, 349–386 (2018)īarry, P.R., Chiu, P.Y., et al.: The effect of normal load on polytetrafluoroethylene tribology. A 11, 658–678 (1975)Įwen, J.P., Heyes, D.M., Dini, D.: Advances in nonequilibrium molecular dynamics simulations of lubricants and additives. Polymer 103, 397–404 (2016)Īshurst, W.T., Hoover, W.G.: Dense-fluid shear viscosity via nonequilibrium molecular dynamics. Laux, K.A., Jean-Fulcrand, A., et al.: The influence of surface properties on sliding contact temperature and friction for polyetheretherketone (PEEK).
Voyer, J., Klien, S., et al.: Static and dynamic friction of pure and friction-modified PA6 polymers in contact with steel surfaces: influence of surface roughness and environmental conditions. Unal, H., Mimaroglu, A.: Friction and wear characteristics of PEEK and its composite under water lubrication. Singh, A.K., Juvekar, V.A.: Steady dynamic friction at elastomer–hard solid interface: a model based on population balance of bonds. Persson, B.N.J., Volokitin, A.I.: Rubber friction on smooth surfaces. A S L E Transactions 20, 354–358 (1977)īenabdallah, S.H.: Static shear strength and adhesion friction of some thermoplastics. E 70, 026117 (2004)Īmuzu, J.K.A., Briscoe, B.J., Tabor, D.: Friction and shear strength of polymers. Hyun, S., Pei, L., et al.: Finite-element analysis of contact between elastic self-affine surfaces. Weber, B., Suhina, T., et al.: Molecular probes reveal deviations from Amontons’ law in multi-asperity frictional contacts. 148, 224701 (2018)īahadur, S., Ludema, K.C.: The viscoelastic nature of the sliding friction fo polyethylene, polypropylene and copolymers. Tiwari, A., Miyashita, N., et al.: Rubber friction: the contribution from the area of real contact. For milder experimental loads, our multiscale model suggests that lower friction states with µ≈0.2 originate in the presence of physisorbed molecules (e.g., water), which significantly reduce interfacial adhesion. Severe normal loading conditions result in significant wear and high experimental friction coefficients µ≈0.5–0.7, which are in good agreement with the calculated values from the multiscale approach in dry conditions. An integration of the nanoscale friction law over the real area of contact yields a macroscopic friction coefficient that allows for a meaningful comparison with measurements from macroscopic tribometer experiments. This dependence, summarized in a nanoscale friction law, is of central importance for our multiscale approach, since it forms a link between MD and elastoplastic contact mechanics calculations. The MD simulations also reveal a linear pressure – shear stress dependence and large adhesive friction in dry conditions. During a short running-in phase, we observe structural transformations at the sliding interface that result in flattening of the initial nanotopographies accompanied by strong polymer chain alignment in the shearing direction. At the nanoscale, non-reactive classical molecular dynamics (MD) simulations of dry and water-lubricated amorphous PEEK–PEEK interfaces are performed.
This work elucidates friction in Poly-Ether-Ether-Ketone (PEEK) sliding contacts through multiscale simulations.
0 kommentar(er)
