Energy dissipation and external forces acting on the skier in slalom


Involverte ansatte
Robert Reid (prosjektleder)
Gerald Smith (veileder)
Matthias Gilgien (masterstudent)
Per Haugen (biveileder)

Prosjektstatus
Analyse/manusskriving

Beskrivelse
In order to get to a better understanding of the instantaneous relation between movements and energy dissipation in slalom, the forces acting on the skier and their relation to energy dissipation are investigated.
 
The purpose of the present study is to better understand the underlying kinetic process, by adding the derivation of forces from the kinematics and relate them to energy dissipation. The data used are based on six Norwegian male European Cup team skiers that were analyzed through 2 turns during a race simulation.
 
Research questions:
  1. To what extent does wind drag contribute to the total breaking force?
  2. What is its contribution in the different phases of a turn, compared to the breaking forces in the ski snow interaction?
  3. To what extent do various forces (gravitational, centrifugal, ground reaction forces caused by vertical movement) contribute to the total loading force on the ski in the different phases of the turn?
  4. To what extent does the loading force on the ski predict the breaking forces in the ski snow interaction?
  5. How does the total loading force on the ski relate to energy dissipation?
  6. How is the position of the point of application of the total loading force on the skis related to energy dissipation?