Events at Department of Energy Technology

Industrial/PhD Course: Tribodynamics


22.11.2021 kl. 08.30 - 25.11.2021 kl. 16.30



Associate Professor, Per Johansen, Aalborg University, Denmark


Per Johansen  

ECTS:  4 


The focus of this course is on the relationship between motion and friction. The motion of surfaces can vary in complexity, from simple steady sliding to movements that are highly variable in time and direction. Tribology is the study of such surfaces in relative motion and the performance of any tribological interface is directly related to friction. Depending on the desired outcome, the optimal friction may be either maximum or minimum. Tribology enables motion, and system designs rely on a proper understanding of the tribodynamics. This course provides the fundamentals of continuum tribodynamics modelling and simulation. In addition, novel non-invasive experimental techniques are introduced. 

Day 1: Lecturer: Per Johansen (8 hours)

  • Fundamentals of friction 
  • Reynolds lubrication theory 
  • Thermohydrodynamic lubrication 

Day 2: Lecturer: Per Johansen (8 hours)

  • Elastohydrodynamics 
  • Thermo-Elastohydrodynamics 
  • Contact models and rough surfaces 

Day 3: Lecturer: Per Johansen (8 hours)

  • Computational tribodynamics 
  • Multibody systems with imperfect joints 

Day 4:  Lecturer: Per Johansen (8 hours)

  • Ultrasound reflectometry in tribology 
  • Adaptive ultrasound reflectometry 
  • Tribotronic control systems 


Fundamentals of fluid mechanics, thermodynamics, solid mechanics and multibody dynamics 

Form of evaluation: 



AAU Energy

Registration Deadline

01.11.2021 kl. 00.00

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