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All Stories

  1. Modeling in tribology: Recent advances, applications, and open questions

    Article • Tribology International, June 2026, Elsevier

    Professor Andreas Almqvist

  2. Correction: Perceptual consensus on cross-country ski–snow performance: a questionnaire study of experts and non-experts

    Article • Frontiers in Sports and Active Living, March 2026, Frontiers

    Professor Andreas Almqvist

  3. Surface separation in elastoplastic contacts

    Article • Physical Review E, February 2026, American Physical Society (APS)

    Professor Andreas Almqvist

  4. Perceptual consensus on cross-country ski–snow performance: a questionnaire study of experts and non-experts

    Article • Frontiers in Sports and Active Living, February 2026, Frontiers

    Professor Andreas Almqvist

  5. Technology on Snow and Ice: Innovation, Monitoring, and Performance for the Olympic Winter Games Milano Cortina 2026

    Article • Scandinavian Journal of Medicine and Science in Sports, February 2026, Wiley

    Professor Andreas Almqvist

  6. Effect of the rail surface topography on wear and fatigue

    Article • Wear, February 2026, Elsevier

    Professor Andreas Almqvist

  7. Multiscale contact mechanics for elastoplastic contacts

    Article • Physical Review E, January 2026, American Physical Society (APS)

    Professor Andreas Almqvist

  8. Modeling pressure-driven flow between adjacent surfaces of viscoplastic and seemingly viscoplastic materials

    Article • January 2026, Institute of Mathematics, Czech Academy of Sciences

    Professor Andreas Almqvist

  9. Meshless Fragile Points Method (FPM) for modelling thin lubricant films by solving Reynolds’ equation

    Article • Tribology International, December 2025, Elsevier

    Professor Andreas Almqvist

  10. A tribological perspective on friction and performance in Olympic snow and ice sports

    Article • Sport Sciences for Health, August 2025, Springer Science + Business Media

    Professor Andreas Almqvist

  11. The Surface-Topography Challenge: A Multi-Laboratory Benchmark Study to Advance the Characterization of Topography

    Article • Tribology Letters, July 2025, Springer Science + Business Media

    Professor Andreas Almqvist

  12. Influence of Load and Position of Center of Mass on COF in Cross-Country Skiing

    Article • Tribology Letters, May 2025, Springer Science + Business Media

    Professor Andreas Almqvist

  13. Quantifying cross-country ski–snow friction using real-time kinematic positioning

    Article • Friction, April 2025, Tsinghua University Press

    Professor Andreas Almqvist

  14. On the influence of grip wax on ski–snow friction during the double poling cycle in cross-country skiing

    Article • Sports Engineering, March 2025, Springer Science + Business Media

    Professor Andreas Almqvist

  15. Evaluating the impact of rail surface roughness post-grinding: An experimental and elastoplastic modelling approach

    Article • Tribology International, January 2025, Elsevier

    Professor Andreas Almqvist

  16. On modeling flow between adjacent surfaces where the fluid is governed by implicit algebraic constitutive relations

    Article • November 2024, Institute of Mathematics, Czech Academy of Sciences

    Professor Andreas Almqvist

  17. Effect of Entrainment Sliding Direction to the Traction Coefficient for Elastohydrodynamic Lubrication Elliptical Contacts in the Linear Isothermal Region

    Article • Journal of Tribology, August 2024, ASME International

    Professor Andreas Almqvist

  18. Computational domain optimization for circular EHL contacts

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, August 2024, SAGE Publications

    Professor Andreas Almqvist, Dr Marcus Björling

  19. Improving Archard’s Wear Model: An Energy-Based Approach

    Article • Tribology Letters, July 2024, Springer Science + Business Media

    Professor Andreas Almqvist

  20. A traction coefficient formula for EHL point contacts operating in the linear isothermal region

    Article • Tribology International, May 2024, Elsevier

    Professor Andreas Almqvist

  21. On Ski–Snow Contact Mechanics During the Double Poling Cycle in Cross-Country Skiing

    Article • Tribology Letters, March 2024, Springer Science + Business Media

    Professor Andreas Almqvist

  22. Semi-Analytical Model for 3D Multilayered Rolling Contact Problems With Different Creepage Combinations

    Article • Journal of Tribology, January 2024, ASME International

    Professor Andreas Almqvist

  23. Numerical investigation of thermomechanical behavior of Yttrium barium zirconate-coated aluminum alloy piston in an internal combustion engine

    Article • Applied Thermal Engineering, January 2024, Elsevier

    Professor Andreas Almqvist

  24. Characterisation of the Contact between Cross-Country Skis and Snow: On the Multi-Scale Interaction between Ski Geometry and Ski-Base Texture

    Article • Lubricants, October 2023, MDPI AG

    Professor Andreas Almqvist

  25. A Novel Free-Gliding Ski Tribometer for Quantification of Ski–Snow Friction with High Precision

    Article • Tribology Letters, September 2023, Springer Science + Business Media

    Professor Andreas Almqvist

  26. On flow of power-law fluids between adjacent surfaces: Why is it possible to derive a Reynolds-type equation for pressure-driven flow, but not for shear-driven flow?

    Article • Applications in Engineering Science, September 2023, Elsevier

    Professor Andreas Almqvist

  27. A Stress-State-Dependent Sliding Wear Model for Micro-Scale Contacts

    Article • Journal of Tribology, August 2023, ASME International

    Professor Andreas Almqvist

  28. Characterisation of the Contact between Cross-Country Skis and Snow: On the Multi-Scale Interaction between Ski Geometry and Ski-Base~Texture

    Article • July 2023, MDPI AG

    Professor Andreas Almqvist

  29. Machine Learning Composite-Nanoparticle-Enriched Lubricant Oil Development for Improved Frictional Performance—An Experiment

    Article • Lubricants, June 2023, MDPI AG

    Professor Andreas Almqvist

  30. Characterisation of the Contact between Cross-Country Skis and Snow: A Micro-Scale Study Considering the Ski-Base Texture

    Article • Lubricants, May 2023, MDPI AG

    Professor Andreas Almqvist

  31. Different Together: Design for Radical Placemaking

    Article • April 2023, ACM (Association for Computing Machinery)

    Professor Andreas Almqvist

  32. Characterisation of the Contact between Cross-Country Skis and Snow: A Micro-Scale Study Considering the Ski-Base Texture

    Article • April 2023, MDPI AG

    Professor Andreas Almqvist

  33. Leakage Threshold of a Saddle Point

    Article • Tribology Letters, March 2023, Springer Science + Business Media

    Professor Andreas Almqvist

  34. A traction coefficient formula for EHL line contacts operating in the linear isothermal region

    Article • Tribology International, February 2023, Elsevier

    Professor Andreas Almqvist

  35. The impact of cross-country skiers’ tucking position on ski-camber profile, apparent contact area and load partitioning

    Article • Proceedings of the Institution of Mechanical Engineers Part P Journal of Sports Engineering and Technology, January 2023, SAGE Publications

    Professor Andreas Almqvist

  36. Bearing Fault Detection Scheme Using Machine Learning for Condition Monitoring Applications

    Article • January 2023, International Journal of Electrical and Computer Engineering Research

    Professor Andreas Almqvist

  37. A Novel Method for Quantifying Ski-Snow Friction Using an Rtk-Gnss Equipped Sled

    Article • January 2023, Elsevier

    Professor Andreas Almqvist

  38. On lower-dimensional models of thin film flow, Part C: Derivation of a Reynolds type of equation for fluids with temperature and pressure dependent viscosity

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, December 2022, SAGE Publications

    Professor Andreas Almqvist

  39. Characterisation of the Contact between Cross-Country Skis and Snow: A Macro-Scale Investigation of the Apparent Contact

    Article • Lubricants, October 2022, MDPI AG

    Professor Andreas Almqvist

  40. A Stress-State-Dependent Thermo-Mechanical Wear Model for Micro-Scale Contacts

    Article • Lubricants, September 2022, MDPI AG

    Professor Andreas Almqvist

  41. Snow contact characterisation of cross-country skis: A macro-scale study of the apparent contact

    Article • August 2022, MDPI AG

    Professor Andreas Almqvist

  42. Numerical Investigation of Thermo-Mechanical Behaviour of an Aluminum-Silicon Alloy Piston in an IC Engine

    Article • July 2022, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Andreas Almqvist

  43. An Inlet Computation Zone Optimization for EHL Line Contacts

    Article • Tribology Letters, July 2022, Springer Science + Business Media

    Professor Andreas Almqvist

  44. The Critical Pressure for Bulk Leakage of Non-planar Smooth Surfaces

    Article • Tribology Letters, June 2022, Springer Science + Business Media

    Professor Andreas Almqvist

  45. Numerical micro-texture optimization for lubricated contacts—A critical discussion

    Article • Friction, April 2022, Tsinghua University Press

    Max Marian, Professor Andreas Almqvist

  46. A Scientific Perspective on Reducing Ski-Snow Friction to Improve Performance in Olympic Cross-Country Skiing, the Biathlon and Nordic Combined

    Article • Frontiers in Sports and Active Living, March 2022, Frontiers

    Professor Andreas Almqvist

  47. Validation of a Multi-Scale Contact Temperature Model for Dry Sliding Rough Surfaces

    Article • Lubricants, March 2022, MDPI AG

    Professor Andreas Almqvist

  48. Boundary element method for the elastic contact problem with hydrostatic load at the contact interface

    Article • Applied Surface Science Advances, December 2021, Elsevier

    Professor Andreas Almqvist

  49. Preface

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, November 2021, SAGE Publications

    Professor Andreas Almqvist

  50. A Numerical Model for Solving Three-Dimensional Rolling Contact Problems with Elastic Coating Layers

    Article • Tribology Letters, September 2021, Springer Science + Business Media

    Dr Marcus Björling, Professor Andreas Almqvist

  51. A Multi-scale Contact Temperature Model for Dry Sliding Rough Surfaces

    Article • Tribology Letters, August 2021, Springer Science + Business Media

    Professor Andreas Almqvist

  52. Fundamentals of Physics-Informed Neural Networks Applied to Solve the Reynolds Boundary Value Problem

    Article • Lubricants, August 2021, MDPI AG

    Professor Andreas Almqvist

  53. Fundamentals of Physics-Informed Neural Networks Applied to Solve the Reynolds Boundary Value Problem

    Article • August 2021, MDPI AG

    Professor Andreas Almqvist

  54. Machine Learning Computational Fluid Dynamics

    Article • June 2021, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Andreas Almqvist

  55. On the stiffness of surfaces with non-Gaussian height distribution

    Article • Scientific Reports, January 2021, Springer Science + Business Media

    Professor Andreas Almqvist

  56. Numerical Simulation of Static Seal Contact Mechanics Including Hydrostatic Load at the Contacting Interface

    Article • Lubricants, December 2020, MDPI AG

    Professor Andreas Almqvist

  57. On lower-dimensional models in lubrication, Part A: Common misinterpretations and incorrect usage of the Reynolds equation

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, December 2020, SAGE Publications

    Professor Andreas Almqvist

  58. On lower-dimensional models in lubrication, Part B: Derivation of a Reynolds type of equation for incompressible piezo-viscous fluids

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, December 2020, SAGE Publications

    Professor Andreas Almqvist

  59. Plastic Deformation of Rough Metallic Surfaces

    Article • Tribology Letters, November 2020, Springer Science + Business Media

    Professor Andreas Almqvist

  60. Application of topological optimisation methodology to hydrodynamic thrust bearings

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, November 2020, SAGE Publications

    Professor Andreas Almqvist

  61. A Stochastic Two-Scale Model for Rarefied Gas Flow in Highly Heterogeneous Porous Media

    Article • Transport in Porous Media, September 2020, Springer Science + Business Media

    Professor Andreas Almqvist

  62. Application of topological optimisation methodology to finitely wide slider bearings operating under incompressible flow

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, May 2020, SAGE Publications

    Professor Andreas Almqvist

  63. How to optimise bearing geometry

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, February 2020, SAGE Publications

    Professor Andreas Almqvist

  64. New insights on lubrication theory for compressible fluids

    Article • International Journal of Engineering Science, December 2019, Elsevier

    Professor Andreas Almqvist

  65. On the Sealability of Metal-to-Metal Seals With Application to Premium Casing and Tubing Connections

    Article • SPE Drilling & Completion, July 2019, Society of Petroleum Engineers (SPE)

    Professor Andreas Almqvist

  66. Ways Into the Design Space of Butterflies in the Stomach

    Article • May 2019, ACM (Association for Computing Machinery)

    Professor Andreas Almqvist

  67. Generating randomly rough surfaces with given height probability distribution and power spectrum

    Article • Tribology International, March 2019, Elsevier

    Professor Andreas Almqvist

  68. Thermal Turbulent Flow in Leading Edge Grooved and Conventional Tilting Pad Journal Bearing Segments—A Comparative Study

    Article • Lubricants, November 2018, MDPI AG

    Professor Andreas Almqvist

  69. An Enhanced Stochastic Two-Scale Model for Metal-to-Metal Seals

    Article • Lubricants, October 2018, MDPI AG

    Professor Andreas Almqvist

  70. On the Two-Scale Modelling of Elastohydrodynamic Lubrication in Tilted-Pad Bearings

    Article • Lubricants, September 2018, MDPI AG

    Professor Andreas Almqvist

  71. Modeling and simulation in tribology across scales: An overview

    Article • Tribology International, September 2018, Elsevier

    Professor Marco Paggi, Professor Andreas Almqvist, Professor Giuseppe Carbone, Dr. Antonio Cammarata

  72. On the loading and unloading of metal-to-metal seals: A two-scale stochastic approach

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, February 2018, SAGE Publications

    Mr Francesc Pérez-Ràfols, Professor Andreas Almqvist

  73. On compressible and piezo-viscous flow in thin porous media

    Article • Proceedings of the Royal Society A Mathematical Physical and Engineering Sciences, January 2018, Royal Society Publishing

    Professor Andreas Almqvist

  74. Influence on friction from piston ring design, cylinder liner roughness and lubricant properties

    Article • Tribology International, December 2017, Elsevier

    Professor Andreas Almqvist

  75. On the flow through plastically deformed surfaces under unloading: A spectral approach

    Article • Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science, February 2017, SAGE Publications

    Mr Francesc Pérez-Ràfols, Professor Andreas Almqvist

  76. Flow in thin domains with a microstructure: Lubrication and thin porous media

    Article • January 2017, American Institute of Physics

    Professor T Staffan Lundström, Professor Andreas Almqvist

  77. Component test for simulation of piston ring – Cylinder liner friction at realistic speeds

    Article • Tribology International, December 2016, Elsevier

    Professor Andreas Almqvist

  78. Linear Complementarity Framework for 3D Steady-State Rolling Contact Problems Including Creepages with Isotropic and Anisotropic Friction for Circular Hertzian Contact

    Article • Tribology Transactions, November 2016, Taylor & Francis

    Professor Andreas Almqvist

  79. Fully coupled EHL model for simulation of finite length line cam-roller follower contacts

    Article • Tribology International, November 2016, Elsevier

    Professor Andreas Almqvist

  80. Modelling Cavitation in (Elasto)Hydrodynamic Lubrication

    Article • October 2016, IntechOpen

    Professor Andreas Almqvist

  81. A Complementarity Problem–Based Solution Procedure for 2D Steady-State Rolling Contacts with Dry Friction

    Article • Tribology Transactions, July 2016, Taylor & Francis

    Professor Andreas Almqvist

  82. A stochastic two-scale model for pressure-driven flow between rough surfaces

    Article • Proceedings of the Royal Society A Mathematical Physical and Engineering Sciences, June 2016, Royal Society Publishing

    Mr Francesc Pérez-Ràfols, Professor T Staffan Lundström, Professor Andreas Almqvist

  83. The measurement of wear using AFM and wear interpretation using a contact mechanics coupled wear model

    Article • Wear, March 2016, Elsevier

    Professor Andreas Almqvist

  84. Modelling of leakage on metal-to-metal seals

    Article • Tribology International, February 2016, Elsevier

    Mr Francesc Pérez-Ràfols, Professor Andreas Almqvist

  85. Low degree of freedom approach for predicting friction in elastohydrodynamically lubricated contacts

    Article • Tribology International, February 2016, Elsevier

    Dr Marcus Björling, Professor Andreas Almqvist

  86. A two scale mixed lubrication wearing-in model, applied to hydraulic motors

    Article • Tribology International, October 2015, Elsevier

    Professor Andreas Almqvist

  87. A strategy for wear analysis using numerical and experimental tools, applied to orbital type hydraulic motors

    Article • Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science, June 2015, SAGE Publications

    Professor Andreas Almqvist

  88. Selected papers from those presented at the 3rd International Tribology Symposium of IFToMM

    Article • Lubrication Science, June 2014, Wiley

    Professor Andreas Almqvist

  89. A wear model for EHL contacts in gerotor type hydraulic motors

    Article • Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science, May 2014, SAGE Publications

    Professor Andreas Almqvist

  90. The effect of three-dimensional deformations of a cylinder liner on the tribological performance of a piston ring–cylinder liner system

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, April 2014, SAGE Publications

    Professor Andreas Almqvist

  91. Editorial

    Article • Tribology - Materials Surfaces & Interfaces, April 2014, SAGE Publications

    Professor Andreas Almqvist

  92. Editorial

    Article • Tribology - Materials Surfaces & Interfaces, February 2014, Taylor & Francis

    Professor Andreas Almqvist

  93. A New Approach for Studying Cavitation in Lubrication

    Article • Journal of Tribology, November 2013, ASME International

    Professor Andreas Almqvist

  94. An experimental and numerical investigation of frictional losses and film thickness for four cylinder liner variants for a heavy duty diesel engine

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, June 2013, SAGE Publications

    Professor Andreas Almqvist

  95. The influence of AFM and VSI techniques on the accurate calculation of tribological surface roughness parameters

    Article • Tribology International, January 2013, Elsevier

    Professor Andreas Almqvist

  96. Homogenization of the Reynolds Equation

    Article • January 2013, Springer Science + Business Media

    Professor Andreas Almqvist

  97. Experimental and numerical investigations of oil film formation and friction in a piston ring–liner contact

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, November 2012, SAGE Publications

    Professor Andreas Almqvist

  98. Homogenization of a Reynolds equation describing compressible flow

    Article • Journal of Mathematical Analysis and Applications, June 2012, Elsevier

    Professor Andreas Almqvist

  99. Semi-deterministic chemo-mechanical model of boundary lubrication

    Article • Faraday Discussions, January 2012, Royal Society of Chemistry

    Professor Andreas Almqvist

  100. Interfacial separation between elastic solids with randomly rough surfaces: Comparison between theory and numerical techniques

    Article • Journal of the Mechanics and Physics of Solids, November 2011, Elsevier

    Professor Andreas Almqvist

  101. The influence of surface roughness on friction in a flexible hybrid bearing

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, September 2011, SAGE Publications

    Professor Andreas Almqvist

  102. Numerical simulation of a wear experiment

    Article • Wear, September 2011, Elsevier

    Professor Andreas Almqvist

  103. Similarities and Differences Between the Flow Factor Method by Patir and Cheng and Homogenization

    Article • Journal of Tribology, July 2011, ASME International

    Professor Andreas Almqvist

  104. Discussion

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, June 2011, SAGE Publications

    Professor Andreas Almqvist, Enrico Ciulli

  105. A semi-deterministic texture-roughness model of the piston ring–cylinder liner contact

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, June 2011, SAGE Publications

    Professor Andreas Almqvist

  106. A numerical model to investigate the effect of honing angle on the hydrodynamic lubrication between a combustion engine piston ring and cylinder liner

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, May 2011, SAGE Publications

    Professor Andreas Almqvist

  107. Homogenization of the Reynolds Equation Governing Hydrodynamic Flow in a Rotating Device

    Article • Journal of Tribology, March 2011, ASME International

    Professor Andreas Almqvist

  108. Multiscale homogenization of a class of nonlinear equations with applications in lubrication theory and applications

    Article • Journal of Function Spaces and Applications, January 2011, Hindawi Publishing Corporation

    Professor Andreas Almqvist

  109. A mixed lubrication model incorporating measured surface topography. Part 1: Theory of flow factors

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, December 2009, SAGE Publications

    Professor Andreas Almqvist

  110. A mixed lubrication model incorporating measured surface topography. Part 2: Roughness treatment, model validation, and simulation

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, December 2009, SAGE Publications

    Professor Andreas Almqvist

  111. On the influence of surface roughness on real area of contact in normal, dry, friction free, rough contact by using a neural network

    Article • Wear, March 2009, Elsevier

    Professor Andreas Almqvist

  112. Variational bounds applied to unstationary hydrodynamic lubrication

    Article • International Journal of Engineering Science, September 2008, Elsevier

    Professor Andreas Almqvist

  113. Reiterated homogenization applied in hydrodynamic lubrication

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, July 2008, SAGE Publications

    Professor Andreas Almqvist

  114. Homogenization of the unstationary incompressible Reynolds equation

    Article • Tribology International, September 2007, Elsevier

    Professor Andreas Almqvist

  115. A cavitation algorithm for arbitrary lubricant compressibility

    Article • Tribology International, August 2007, Elsevier

    Professor Andreas Almqvist

  116. Rough surface flow factors in full film lubrication based on a homogenization technique

    Article • Tribology International, July 2007, Elsevier

    Professor Andreas Almqvist

  117. On the dry elasto-plastic contact of nominally flat surfaces

    Article • Tribology International, April 2007, Elsevier

    Professor Andreas Almqvist

  118. New concepts of homogenization applied in rough surface hydrodynamic lubrication

    Article • International Journal of Engineering Science, January 2007, Elsevier

    Professor Andreas Almqvist

  119. The homogenization process of the Reynolds equation describing compressible liquid flow

    Article • Tribology International, September 2006, Elsevier

    Professor Andreas Almqvist

  120. An Abbott Curve Based Rough Surface Contact Mechanics Approach

    Article • January 2005, ASME International

    Professor Andreas Almqvist

  121. A comparison between computational fluid dynamic and Reynolds approaches for simulating transient EHL line contacts

    Article • Tribology International, January 2004, Elsevier

    Professor Andreas Almqvist