Sökning: "Wheel forces"
Visar resultat 1 - 5 av 63 avhandlingar innehållade orden Wheel forces.
1. Simulation and Measurement of Wheel on Rail Fatigue and Wear
Sammanfattning : The life of railway wheels and rails has been decreasing in recent years. This is mainly caused by more traffic and running at higher vehicle speed. LÄS MER
2. Optimisation of horizontal alignments for railways - Procedures involving evaluation of dynamic vehicle response
Sammanfattning : This doctoral thesis summarises and deepens eightpublications on a project concerning railway alignments.The thesis presents an approach to definingequally costlyalignment alternatives. LÄS MER
3. Investigation of Aerodynamic Resistance of Rotating Wheels on Passenger Cars
Sammanfattning : With the current conditions of rising fuel prices and the toughening of environmental legislation for CO2 and other emission gases, vehicle manufacturers around the world are looking into the ways to make their vehicles more energy efficient and therefore more environmentally friendly. One of the ways to achieve this goal is to improve aerodynamic design of vehicles in order to decrease aerodynamic resistance forces. LÄS MER
4. Inverse Identification of Dynamic Wheel-rail Contact Forces
Sammanfattning : Accurate evaluation of contact forces between wheel and rail is essential in the assessmentof vehicle performance and to predict consequences of dynamic vehicle-track interaction.As the contact forces can not be measured directly in the field, one common approachis to measure the strain or acceleration at various positions on a wheel or wheel axle. LÄS MER
5. Towards the Identification of Wheel-Rail Contact Forces
Sammanfattning : The accurate determination of the contact forces between rail and wheel is essential inthe analysis of different kinds of rolling contact fatigue. As the contact forces cannot bemeasured directly in the field, one approach is to measure the strain at certain positionsof an instrumented wheel. LÄS MER