pith. sign in

arxiv: 2606.09128 · v1 · pith:FO337T3Inew · submitted 2026-06-08 · ⚛️ physics.app-ph

Dynamic sliding and rolling friction models for linear viscoelastic contact pairs

Pith reviewed 2026-06-27 14:30 UTC · model grok-4.3

classification ⚛️ physics.app-ph
keywords viscoelastic contactsliding frictionrolling frictiondynamic friction modelshyperbolic PDEsbristle modelsviscoelasto-kinematic equations
0
0 comments X

The pith

A PDE framework for viscoelastic sliding and rolling contact preserves hyperbolicity and links the two processes.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper derives a class of viscoelasto-kinematic equations as a system of PDEs that track frictional force, bristle deformations, and internal states at the contact interface. It combines linear viscoelastic rheologies with nonlinear dynamic friction laws and shows that this combination keeps the equations hyperbolic. The work then applies the equations to example cases of sliding and rolling, concluding that the two contact modes share closely related dynamics rather than requiring entirely separate treatments. A sympathetic reader would care because this offers a single mathematical setting for a wide range of frictional systems instead of case-by-case modeling.

Core claim

Combining linear viscoelastic rheologies for bristle-like elements with nonlinear dynamic friction models produces a class of viscoelasto-kinematic equations formulated as PDEs for the evolution of frictional force, bristle deformations, and internal state variables; linear viscoelasticity preserves the hyperbolic character of the PDE systems typical in rolling contact, and sliding and rolling therefore exhibit closely related underlying dynamics.

What carries the argument

The viscoelasto-kinematic equations, a system of PDEs governing frictional force, bristle deformations, and internal state variables at the interface.

If this is right

  • The same PDE framework applies to a broad class of viscoelastic frictional systems.
  • Mathematical analysis of hyperbolicity developed for rolling contact carries over to sliding contact.
  • Sliding and rolling contact can be treated with a single set of equations rather than as distinct processes.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • Numerical schemes already used for hyperbolic rolling-contact problems could be applied without change to sliding cases under this model.
  • Stability questions for viscoelastic interfaces could be studied uniformly across contact types using standard hyperbolic PDE tools.
  • The framework suggests that experimental data from one regime might inform predictions in the other without re-deriving the equations.

Load-bearing premise

Linear viscoelastic rheologies applied to bristle-like elements can be combined directly with nonlinear dynamic friction models to yield a well-posed PDE system for the interface without extra closure relations.

What would settle it

An explicit check on the characteristic speeds or eigenvalues of the derived PDE system for a chosen linear viscoelastic model that shows the system has become non-hyperbolic.

Figures

Figures reproduced from arXiv: 2606.09128 by Luigi Romano.

Figure 1
Figure 1. Figure 1: A schematic representation of the friction model: (a) configuration with a rigid substrate; (b) [PITH_FULL_IMAGE:figures/full_fig_p004_1.png] view at source ↗
Figure 2
Figure 2. Figure 2: A schematic representation of the Generalised Maxwell (GM) and Generalised Kelvin-Voigt [PITH_FULL_IMAGE:figures/full_fig_p007_2.png] view at source ↗
Figure 3
Figure 3. Figure 3: Sliding and rolling contact problem between: (a) two spheres with angular velocities [PITH_FULL_IMAGE:figures/full_fig_p009_3.png] view at source ↗
Figure 4
Figure 4. Figure 4: Steady-state longitudinal and normalised force [PITH_FULL_IMAGE:figures/full_fig_p018_4.png] view at source ↗
Figure 5
Figure 5. Figure 5: Steady-state longitudinal and normalised force [PITH_FULL_IMAGE:figures/full_fig_p018_5.png] view at source ↗
Figure 6
Figure 6. Figure 6: Transient system behaviour: (a) Vx = 0.1 m s−1 ; (b) Vx = 0.3 m s−1 . Line styles: τ1,2 = τ2,2 = 0.1 s (solid thick lines), τ1,2 = τ2,2 = 0.3 s (dashed lines). Other model parameters as in [PITH_FULL_IMAGE:figures/full_fig_p020_6.png] view at source ↗
Figure 7
Figure 7. Figure 7: Steady-state longitudinal and normalised force [PITH_FULL_IMAGE:figures/full_fig_p022_7.png] view at source ↗
Figure 8
Figure 8. Figure 8: Transient system behaviour. Line styles: [PITH_FULL_IMAGE:figures/full_fig_p022_8.png] view at source ↗
read the original abstract

This paper considers the sliding and rolling contact between viscoelastic bodies. Combining linear viscoelastic rheologies for bristle-like elements with nonlinear dynamic friction models, it derives a class of viscoelasto-kinematic equations, formulated as a system of partial differential equations (PDEs) governing the evolution of the frictional force, bristle deformations, and internal state variables at the interface between the contacting bodies. The resulting system is analysed mathematically, demonstrating that linear viscoelasticity preserves the hyperbolic character of the PDE systems typically encountered in rolling contact. The proposed theory is illustrated through representative examples of both sliding and rolling contact, highlighting that these two processes, whilst often treated as distinct, may in fact exhibit closely related underlying dynamics. Overall, the framework provides a general theoretical setting applicable to a broad class of viscoelastic frictional systems.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

0 major / 3 minor

Summary. The manuscript develops a theoretical framework for dynamic sliding and rolling friction between linear viscoelastic bodies. It combines linear viscoelastic rheologies applied to bristle-like elements with nonlinear dynamic friction models to derive a system of PDEs governing the evolution of frictional force, bristle deformations, and internal state variables. Mathematical analysis demonstrates that linear viscoelasticity preserves the hyperbolic character of the resulting PDE system. The theory is illustrated with representative examples of sliding and rolling contact, which are used to argue that the two processes share closely related underlying dynamics. The framework is positioned as a general setting for a broad class of viscoelastic frictional systems.

Significance. If the derivations hold, the work supplies a unified PDE-based description that bridges sliding and rolling contact in viscoelastic settings, an area where the two are typically modeled separately. The explicit computation of characteristic speeds to confirm that they remain real (hence hyperbolic) for the chosen rheologies is a clear strength, directly supporting well-posedness without additional closure relations. The examples follow from the same system, providing a concrete demonstration of the claimed dynamical similarity.

minor comments (3)
  1. [Abstract] The abstract refers to 'representative examples' without naming the specific linear viscoelastic rheologies (e.g., Kelvin-Voigt, standard linear solid) or the form of the nonlinear friction law employed in the illustrations; adding this detail would improve immediate readability.
  2. Notation for the internal state variables and the precise definition of the bristle deformation vector could be introduced earlier (e.g., in the problem statement) to aid readers who are not already familiar with dynamic friction bristle models.
  3. Figure captions for the example solutions would benefit from explicit statements of the parameter values used (e.g., relaxation times, friction coefficients) so that the plots can be reproduced from the text alone.

Simulated Author's Rebuttal

0 responses · 0 unresolved

We thank the referee for their positive assessment of the manuscript and their recommendation to accept. No major comments were raised in the report.

Circularity Check

0 steps flagged

No significant circularity identified

full rationale

The manuscript derives the viscoelasto-kinematic PDE system by direct substitution of linear viscoelastic constitutive relations into the bristle friction framework, then explicitly computes characteristic speeds to confirm they remain real. Examples for sliding and rolling follow from the same system with no additional closure relations or stability conditions. No step reduces a central claim to a fitted input, self-citation chain, or definitional equivalence; the derivation is self-contained against external benchmarks.

Axiom & Free-Parameter Ledger

0 free parameters · 0 axioms · 0 invented entities

Abstract-only review provides no explicit free parameters, axioms, or invented entities; the model is described as combining standard linear viscoelastic rheologies with nonlinear dynamic friction models.

pith-pipeline@v0.9.1-grok · 5652 in / 1130 out tokens · 21100 ms · 2026-06-27T14:30:37.535406+00:00 · methodology

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Reference graph

Works this paper leans on

92 extracted references · 43 canonical work pages

  1. [1]

    Theory of rubber friction and contact mechanics

    Persson BNJ. Theory of rubber friction and contact mechanics. The Journal of Chemical Physics 115(8):3840-3861 (2001). Available from:https://doi.org/10.1063/1.1388626

  2. [2]

    Rubber friction: role of the flash temperature

    Persson BNJ. Rubber friction: role of the flash temperature. J. Phys.: Condens. Matter 18 7789 (2006). Available from:https://doi.org/10.1088/0953-8984/18/32/025

  3. [4]

    A survey and comparison of several friction force models for dynamic analysis of multibody mechanical systems

    Marques F, Flores P, Pimenta Claro JC, Lankarani HM. A survey and comparison of several friction force models for dynamic analysis of multibody mechanical systems. Nonlinear Dyn 86(3):1407–1443 (2016). Available from:https://doi.org/10.1007/s11071-016-2999-3

  4. [5]

    Modeling and analysis of friction including rolling effects in multibody dynamics: a review

    Marques F, Flores P, Claro JCP, et al. Modeling and analysis of friction including rolling effects in multibody dynamics: a review. Multibody Syst Dyn 45:223–244 (2019). Available from: https: //doi.org/10.1007/s11044-018-09640-6

  5. [6]

    B. Wang, H. Jin, H. Yin, et al., ”Friction dynamics identification based on quadratic approximation of LuGre model,” Nonlinear Dyn., vol. 112, no. 10, pp. 6357–6377, 2024, doi: 10.1007/s11071-024- 09331-2

  6. [7]

    G. A. Waltersson and Y. Karayiannidis, ”Planar friction modeling with LuGre dynamics and limit surfaces,” IEEE Trans. Robot., vol. 40, no. 6, pp. 3166–3180, 2024, doi: 10.1109/TRO.2024.3410455

  7. [8]

    Modeling of spherical robots rolling on generic surfaces

    Hogan FR, Forbes JR. Modeling of spherical robots rolling on generic surfaces. Multibody Syst Dyn 35:91–109 (2015). Available from:https://doi.org/10.1007/s11044-014-9438-3

  8. [9]

    Modeling chain continuously variable transmission for direct implementation in transmission control

    Yildiz Y, Piccininni A, Bottiglione F, Carbone G. Modeling chain continuously variable transmission for direct implementation in transmission control. Mechanism and Machine Theory 105:428–440 (2016). Available from:https://doi.org/10.1016/j.mechmachtheory.2016.07.015

  9. [10]

    Physics-based modeling of a chain continuously variable transmis- sion

    Duan C, Hebbale K, Liu F, Yao J. Physics-based modeling of a chain continuously variable transmis- sion. Mechanism and Machine Theory 105:397–408 (2016). Available from: https://doi.org/10. 1016/j.mechmachtheory.2016.07.018

  10. [11]

    Information transfer rate in BCIs: Towards tightly integrated symbiosis

    Kumaran VU, Weiss L, Zogg M, Wegener K. Analytical flat belt drive model considering bilinear elastic behaviour with residual strains. Mechanism and Machine Theory 190 (2023). Available from: https://doi.org/10.1016/j.mechmachtheory.2023.105466. 24

  11. [12]

    Brush model

    Frendo F, Bucchi F. “Brush model” for the analysis of flat belt transmissions in steady-state conditions. Mechanism and Machine Theory 143:103653 (2020). Available from: https://doi.org/ 10.1016/j.mechmachtheory.2019.103653

  12. [13]

    Enhanced brush model for the mechanics of power transmission in flat belt drives under steady-state conditions: effect of belt elasticity

    Frendo F, Bucchi F. Enhanced brush model for the mechanics of power transmission in flat belt drives under steady-state conditions: effect of belt elasticity. Mechanism and Machine Theory 153:103998 (2020). Available from:https://doi.org/10.1016/j.mechmachtheory.2020.103998

  13. [14]

    Validation of the brush model for the analysis of flat belt transmissions in steady-state conditions by finite element simulation

    Bucchi F, Frendo F. Validation of the brush model for the analysis of flat belt transmissions in steady-state conditions by finite element simulation. Mechanism and Machine Theory 167:104556 (2022). Available from:https://doi.org/10.1016/j.mechmachtheory.2021.104556

  14. [15]

    Viscoelastic steady-state rolling contacts: a generalized boundary element formulation for conformal and non-conformal geometries

    Santeramo M, Putignano C, Vorlaufer G, Krenn S, Carbone G. Viscoelastic steady-state rolling contacts: a generalized boundary element formulation for conformal and non-conformal geometries. Journal of the Mechanics and Physics of Solids 171 (2023). Available from: https://doi.org/10. 1016/j.jmps.2022.105129

  15. [16]

    Simulating gear and bearing interactions in the presence of faults: Part I

    Sawalhi N, Randall RB. Simulating gear and bearing interactions in the presence of faults: Part I. The combined gear–bearing dynamic model and the simulation of localised bearing faults. Mech Syst Signal Process 22(8):1924–1951 (2008). Available from: https://doi.org/10.1016/j.ymssp.2007. 12.001

  16. [17]

    Advanced bearing diagnostics: a comparative study of two powerful approaches

    Abboud D, Elbadaoui M, Smith WA, Randall RB. Advanced bearing diagnostics: a comparative study of two powerful approaches. Mech Syst Signal Process 114:604–627 (2019). Available from: https://doi.org/10.1016/j.ymssp.2018.05.011

  17. [18]

    Nonlinear dynamic analysis of supporting bearings in a rotor–bearing system considering vibration interaction

    Liu Y, Yan C, Shi J, et al. Nonlinear dynamic analysis of supporting bearings in a rotor–bearing system considering vibration interaction. Nonlinear Dyn 113:22435–22458 (2025). Available from: https://doi.org/10.1007/s11071-025-11350-6

  18. [19]

    Dynamic characteristic analysis of a gear–rotor–bearing coupling system considering bearing fit

    Zeng Q, Liu Y, Du W, et al. Dynamic characteristic analysis of a gear–rotor–bearing coupling system considering bearing fit. Nonlinear Dyn 113:2131–2154 (2025). Available from: https://doi.org/10. 1007/s11071-024-10290-x

  19. [20]

    Rail Vehicle Dynamics

    Knothe K, Stichel S. Rail Vehicle Dynamics. 1st ed. Springer, Cham (2016)

  20. [21]

    Three-Dimensional Elastic Bodies in Rolling Contact

    Kalker JJ. Three-Dimensional Elastic Bodies in Rolling Contact. 1st ed. Springer, Dordrecht (1990). Available from:https://doi.org/10.1007/978-94-015-7889-9

  21. [22]

    Rolling Contact Phenomena

    Kalker JJ. Rolling Contact Phenomena. In: Jacobson B, Kalker JJ (eds) Rolling Contact Phenomena. International Centre for Mechanical Sciences, vol. 411. Springer, Vienna (2000)

  22. [23]

    The Science of Vehicle Dynamics

    Guiggiani M. The Science of Vehicle Dynamics. 3rd ed. Springer, Cham (2023). Available from: https://doi.org/10.1007/978-3-031-06461-6

  23. [24]

    A thermo-frictional tyre model including the effect of flash temperature

    Mavros G. A thermo-frictional tyre model including the effect of flash temperature. Vehicle Sys- tem Dynamics, 57(5):721-751 (2019). Available from:https://doi.org/10.1080/00423114.2018. 1484147

  24. [25]

    Advanced Brush Tyre Modelling

    Romano L. Advanced Brush Tyre Modelling. SpringerBriefs in Applied Sciences. Springer, Cham (2022). Available from:https://doi.org/10.1007/978-3-030-98435-9

  25. [26]

    Tire tread wear characteristics: insights from indoor experiments and analytical modeling

    Zhang M, Unrau HJ, Gießler M, Gauterin F. Tire tread wear characteristics: insights from indoor experiments and analytical modeling. Tribology International 10 (2025). Available from: https: //doi.org/10.1016/j.triboint.2025.110752

  26. [28]

    A new model for control of systems with friction

    Canudas-de-Wit C, Olsson H, ˚Astr¨ om KJ, Lischinsky P. A new model for control of systems with friction. IEEE Trans Autom Control 40(3):419–425 (1995)

  27. [29]

    Control Systems with Friction

    Olsson H. Control Systems with Friction. Doctoral thesis, Lund Institute of Technology (1996)

  28. [30]

    Revisiting the LuGre friction model

    ˚Astr¨ om KJ, Canudas-de-Wit C. Revisiting the LuGre friction model. IEEE Control Syst Mag 28(6):101–114 (2008)

  29. [31]

    Stability of steady frictional slipping

    Rice JR and Ruina AL. Stability of steady frictional slipping. Journal of Applied Mechanics 50(2):343– 349 (1983). Available from:https://doi.org/10.1115/1.3167042

  30. [32]

    An integrated friction model with improved presliding behavior

    Swevers J, Al-Bender F, Ganseman CG, Projogo T. An integrated friction model with improved presliding behavior. IEEE Trans Autom Control 45(4):675–686 (2000)

  31. [33]

    Modification of the Leuven integrated friction model

    Lampaert V, Swevers J, Al-Bender F. Modification of the Leuven integrated friction model. IEEE Trans Autom Control 47(4):683–687 (2002)

  32. [34]

    Elasto-plastic friction model: contact compliance and stiction

    Dupont P, Armstrong B, Hayward V. Elasto-plastic friction model: contact compliance and stiction. Proc. 2000 American Control Conference, 1072–1077 (2000)

  33. [35]

    Single-state elasto-plastic friction models

    Dupont P, Hayward V, Armstrong B, et al. Single-state elasto-plastic friction models. IEEE Trans 25 Autom Control 47:787–792 (2002)

  34. [36]

    The generalized Maxwell-slip model: A novel model for friction simulation and compensation

    Al-Bender F, Lampaert V, Swevers J. The generalized Maxwell-slip model: A novel model for friction simulation and compensation. IEEE Transactions on Automatic Control 50(11):1883-1887 (2005). Available from:https://doi.org/10.1109/TAC.2005.858676

  35. [37]

    First-order friction models with bristle dynamics: lumped and distributed formulations, arXiv:2602.09429

    Romano L, Aamo OM, ˚Aslund J, Frisk E. First-order friction models with bristle dynamics: lumped and distributed formulations, arXiv:2602.09429. IEEE Trans Control Syst Technol (2026)

  36. [38]

    Two-dimensional FrBD friction models for rolling contact

    Romano L. Two-dimensional FrBD friction models for rolling contact. Nonlinear Dyn (2026)

  37. [39]

    Two-dimensional FrBD friction models for rolling contact: extension to linear viscoelas- ticity, Tribology International 220, 111953 (2026)

    Romano L. Two-dimensional FrBD friction models for rolling contact: extension to linear viscoelas- ticity, Tribology International 220, 111953 (2026)

  38. [40]

    Transient phenomena in two elastic cylinders rolling over each other with dry friction

    Kalker JJ. Transient phenomena in two elastic cylinders rolling over each other with dry friction. J Appl Mech 37(3):677–688 (1970). Available from:https://doi.org/10.1115/1.3408597

  39. [41]

    Transient rolling contact phenomena

    Kalker JJ. Transient rolling contact phenomena. ASLE Trans 14(3):177–184 (1971). Available from: https://doi.org/10.1080/05698197108983240

  40. [42]

    On the Rolling Contact of Two Elastic Bodies in the Presence of Dry Friction

    Kalker JJ. On the Rolling Contact of Two Elastic Bodies in the Presence of Dry Friction. PhD thesis, TH Delft (1967)

  41. [43]

    The rolling contact of a rigid cylinder with a viscoelastic half space

    Hunter SC. The rolling contact of a rigid cylinder with a viscoelastic half space. Trans. ASME, Ser. E, J. Appl. Mech. 28:611–617 (1961)

  42. [44]

    Contact problem of rolling of a viscoelastic cylinder on a base of the same ma- terial

    Goryacheva I. Contact problem of rolling of a viscoelastic cylinder on a base of the same ma- terial. J. Appl. Math. Mech. 37(5), 925933 (1973). Available from: https://doi.org/10.1016/ 0021-8928(73)90017-8

  43. [45]

    Contact characteristics of a rolling/sliding cylinder and a viscoelastic layer bonded to an elastic substrate

    Goryacheva I, Sadeghi F. Contact characteristics of a rolling/sliding cylinder and a viscoelastic layer bonded to an elastic substrate. Wear 184(2):125-132 (1995). Available from: https://doi.org/10. 1016/0043-1648(94)06561-6

  44. [46]

    Sliding of a spherical indenter on a viscoelastic foundation with the forces of molecular attraction taken into account

    Goryacheva IG, Gubenko MM, Makhovskaya YY. Sliding of a spherical indenter on a viscoelastic foundation with the forces of molecular attraction taken into account. Prikl. J. Appl. Mech. Tech. Phys., 55(1):81–88 (2014)

  45. [47]

    Goryacheva IG, Yakovenko AA: Indentation of a rigid cylinder with a flat rough base into a thin viscoelastic layer. J. Appl. Mech. Tech. Phys., 62(5):723–735 (2021)

  46. [48]

    Contact Mechanics in Tribology

    Goryacheva IG. Contact Mechanics in Tribology. 1st ed. Springer Dordrecht (2010). Available from: https://doi.org/10.1007/978-94-015-9048-8

  47. [49]

    Three-dimensional Contact of a Rigid Roller Traversing a Viscoelastic Half Space

    Panek C, Kalker JJ. Three-dimensional Contact of a Rigid Roller Traversing a Viscoelastic Half Space. J. Inst. Maths Applies 26:299-313 (1980)

  48. [50]

    Viscoelastic Multilayered Cylinders Rolling With Dry Friction

    Kalker JJ. Viscoelastic Multilayered Cylinders Rolling With Dry Friction. ASME. J. Appl. Mech. September 58(3):666–679 (1991). Available from:https://doi.org/10.1115/1.2897247

  49. [51]

    On the rolling contact problem of two elastic solids with graded coatings

    G¨ uler MA, Alinia Y, Adibnazari S. On the rolling contact problem of two elastic solids with graded coatings. Int J Mech Sci 64:62-81 (2012)

  50. [52]

    Subsurface stress evolution under orthotropic wear and frictional contact conditions

    Juli´ a JM, Rodr´ ıguez-Tembleque L. Subsurface stress evolution under orthotropic wear and frictional contact conditions. Int J Mech Sci 234:107695 (2022)

  51. [53]

    Wear and subsurface stress evolution in tractive rolling contact

    Juli´ a JM, Rodr´ ıguez-Tembleque L. Wear and subsurface stress evolution in tractive rolling contact. Int J Mech Sci 294, 110195, ISSN 0020-7403 (2025)

  52. [54]

    New Developments in the Theory of Wheel/Rail Contact Mechanics

    Nielsen JB. New Developments in the Theory of Wheel/Rail Contact Mechanics. PhD thesis, Tech- nical University of Denmark (1998). Available from: https://orbit.dtu.dk/en/publications/ new-developments-in-the-theory-of-wheelrail-contact-mechanics

  53. [55]

    Transient rolling of cylindrical contacts with constant and linearly increasing applied slip

    Dahlberg J, Alfredsson B. Transient rolling of cylindrical contacts with constant and linearly increasing applied slip. Wear 266:316–326 (2009). Available from: https://doi.org/10.1016/j.wear.2008. 07.008

  54. [56]

    Contact Mechanics

    Johnson KL. Contact Mechanics. Cambridge University Press (1985). Available from: https: //doi.org/10.1017/CBO9781139171731

  55. [57]

    Simplified theory of rolling contact

    Kalker JJ. Simplified theory of rolling contact. Delft Progress Report, Series C (1973), 1–10

  56. [58]

    Tire and Vehicle Dynamics

    Pacejka HB. Tire and Vehicle Dynamics. 3rd ed. Elsevier, Amsterdam (2012)

  57. [59]

    Vehicle dynamics: Theory and Application, 4th ed

    Jazar RN. Vehicle dynamics: Theory and Application, 4th ed. Springer Cham (2025)

  58. [60]

    Railway wheel and automotive tyre

    Kalker JJ. Railway wheel and automotive tyre. Veh Syst Dyn 5(15):255–269 (1979)

  59. [61]

    Assessing the accuracy of simplified frictional rolling contact algorithms

    Vollebregt EAH, Iwnicki SD, Xie G, Shackelton P. Assessing the accuracy of simplified frictional rolling contact algorithms. Veh Syst Dyn 50(1):1–17 (2012). Available from: https://doi.org/10. 1080/00423114.2011.552618

  60. [62]

    Short-wavelength rail corrugation and non-steady-state contact mechanics

    Knothe K, Groß-Thebing A. Short-wavelength rail corrugation and non-steady-state contact mechanics. Veh Syst Dyn 46(1–2):49–66 (2008). Available from: https://doi.org/10.1080/ 00423110701590180. 26

  61. [63]

    Non-steady-state modelling of wheel–rail contact for dynamic simulation of railway vehicles

    Alonso A, Gim´ enez JG. Non-steady-state modelling of wheel–rail contact for dynamic simulation of railway vehicles. Veh Syst Dyn 46(3):179–196 (2008). Available from: https://doi.org/10.1080/ 00423110701248011

  62. [64]

    Non-steady-state modelling of wheel–rail contact

    Guiral A, Alonso A, Baeza L, Gim´ enez JG. Non-steady-state modelling of wheel–rail contact. Veh Syst Dyn 51(1):91–108 (2013). Available from:https://doi.org/10.1080/00423114.2012.713499

  63. [65]

    Influence of longitudinal creepage and wheel inertia on short-pitch corruga- tion

    Ciavarella M, Barber J. Influence of longitudinal creepage and wheel inertia on short-pitch corruga- tion. Proc IMechE Part J: Eng Tribol 222(3) (2008). Available from: https://doi.org/10.1243/ 13506501JET373

  64. [66]

    Short-pitch rail corrugation: a resonance-free regime? Wear 266:9–10 (2008)

    Afferrante L, Ciavarella M. Short-pitch rail corrugation: a resonance-free regime? Wear 266:9–10 (2008). Available from:https://doi.org/10.1016/j.wear.2008.12.003

  65. [67]

    A modification on velocity terms of Reynolds equation in a spherical coordinate system

    Afferrante L, Ciavarella M. Short-pitch corrugation of railway tracks with wooden or concrete sleepers: an enigma solved? Tribol Int 43(3) (2010). Available from: https://doi.org/10.1016/j.triboint. 2009.09.010

  66. [68]

    A model of the transient behavior of tractive rolling contacts

    Al-Bender F, De Moerlooze K. A model of the transient behavior of tractive rolling contacts. Advances in Tribology (2008). Available from:https://doi.org/10.1155/2008/214894

  67. [69]

    Unsteady-state brush theory

    Romano L, Bruzelius F, Jacobson B. Unsteady-state brush theory. Veh Syst Dyn (2020). Available from:https://doi.org/10.1080/00423114.2020.1774625

  68. [70]

    Analytical results in transient brush tyre models: theory for large camber angles and classic solutions with limited friction

    Romano L, Timpone F, Bruzelius F, Jacobson B. Analytical results in transient brush tyre models: theory for large camber angles and classic solutions with limited friction. Meccanica 57:165–191 (2022). Available from:http://dx.doi.org/10.1007/s11012-021-01422-3

  69. [71]

    Rolling, tilting and spinning spherical wheels: analytical results using brush theory

    Romano L, Timpone F, Bruzelius F, Jacobson B. Rolling, tilting and spinning spherical wheels: analytical results using brush theory. Mechanism and Machine Theory 173:104836 (2022). Available from:https://doi.org/10.1016/j.mechmachtheory.2022.104836

  70. [72]

    An extended LuGre-brush tyre model for large camber angles and turning speeds

    Romano L, Bruzelius F, Jacobson B. An extended LuGre-brush tyre model for large camber angles and turning speeds. Veh Syst Dyn (2022). Available from: https://doi.org/10.1080/00423114. 2022.2086887

  71. [73]

    Transient wheel–rail rolling contact theories

    Romano L, Maglio M, Bruni S. Transient wheel–rail rolling contact theories. Tribology International (2023)

  72. [74]

    Kinematics of rolling contact: derivation, misconceptions, and generalisations

    Romano L. Kinematics of rolling contact: derivation, misconceptions, and generalisations. Mechanism and Machine Theory, 216 (2025). Available from: https://doi.org/10.1016/j.mechmachtheory. 2025.106201

  73. [75]

    Introduction to polymer viscoelasticity

    Shaw MT, MacKnight WJ. Introduction to polymer viscoelasticity. Wiley, Amsterdam (2018)

  74. [76]

    The science and technology of rubber

    Mark JE, Erman B, Roland M. The science and technology of rubber. Academic press, London (2013)

  75. [77]

    Engineering viscoelasticity

    Gutierrez-Lemini D. Engineering viscoelasticity. Springer, New York (2014)

  76. [78]

    Three-dimensional rolling/sliding contact on a viscoelastic layered half-space

    Wallace ER, Chaise T, Nelias D. Three-dimensional rolling/sliding contact on a viscoelastic layered half-space. Journal of the Mechanics and Physics of Solids 143, 104067 (2020)

  77. [79]

    A novel methodology to predict sliding and rolling friction of viscoelastic materials: Theory and experiments

    Carbone G, Putignano P. A novel methodology to predict sliding and rolling friction of viscoelastic materials: Theory and experiments. Journal of the Mechanics and Physics of Solids 61(8):1822-1834 (2013)

  78. [80]

    Rolling contact of a rigid sphere/sliding of a spherical indenter upon a viscoelastic half-space containing an ellipsoidal inhomogeneity

    Koumi KE, Chaise T, Nelias D. Rolling contact of a rigid sphere/sliding of a spherical indenter upon a viscoelastic half-space containing an ellipsoidal inhomogeneity. Journal of the Mechanics and Physics of Solids 80:1-25 (2015)

  79. [81]

    Viscoelastic models revisited: characteristics and interconversion formulas for generalized Kelvin–Voigt and Maxwell models

    Serra-Aguila A, Puigoriol-Forcada JM, Reyes G, et al. Viscoelastic models revisited: characteristics and interconversion formulas for generalized Kelvin–Voigt and Maxwell models. Acta Mech. Sin. 35:1191–1209 (2019). Available from:https://doi.org/10.1007/s10409-019-00895-6

  80. [82]

    Interconversion of Prony series for relaxation and creep

    Loy RJ, de Hoog FR, Anderssen RS. Interconversion of Prony series for relaxation and creep. J. Rheol. 59, 1261–1270 (2015)

Showing first 80 references.