Essays about: "Järnvägshjul"

Found 2 essays containing the word Järnvägshjul.

1. 1. Investigation of sources of wheel-rail impact force deviation through dynamic simulations

   University essay from KTH/Fordonsdynamik

   Author : Sumanth Ram Aravindababu; [2021]
   Keywords : Multi-body simulations; wheel damages; rail damage; damage thresholds; wheel-rail impact forces; classification; Flerkroppssimulering; hjulskador; rälskador; skadetrösklar; hjulslagkraft; rälslagkraft; klassificering;

   Abstract : Due to the increase in demand on freight transportation it becomes necessary to avoid delays to ensure that the goods reach its destination on time. The main factors causing disturbances in the traffic on the mainline is the breakdown of vehicles mainly due to damaged wheels. READ MORE

3. 2. An Attempt Towards FE-Modelling of Fracture Propagation in Railway Wheels

   University essay from KTH/Spårfordon

   Author : Fred Öhnander; [2018]
   Keywords : Railway wheel; Wheel-rail contact; Wear; Fracture initiation; Physical fracture propagation model; FE-model; Fracture mechanics; XFEM; Inclusion; Järnvägshjul; Hjul-räl-kontakt; Slitage; Sprickinitiering; Fysisk sprickbildningsmodell; FE-modell; Frakturmekanik; XFEM; Imperfektion;

   Abstract : The demand for higher velocities and heavier axle loads for freight trains leads to higher forces on the railway wheels which in turn lead to an increase in stresses on and below the surface of the wheel-rail contact. By time, this induces wear on the wheels which consequently lead to higher maintenance costs and in some cases accidents. READ MORE