Sökning: "point contact"
Visar resultat 1 - 5 av 336 avhandlingar innehållade orden point contact.
1. Time-domain modelling of curve squeal: a fast model for one- and two-point wheel/rail contact
Sammanfattning : Curve squeal is a type of railway noise that may arise when a railway vehicle negotiates a relatively tight curve. A single frequency, corresponding to a wheel mode, dominates the radiated sound, which makes squeal a very tonal noise. LÄS MER
2. Vibrations induced by surface roughness in nonlinear rolling contacts
Sammanfattning : For efficient transportation in either trains, busses or passenger cars, rolling elements such as wheels, tyres, bearings and transmission elements are fundamental. The energy efficiency and the generation of noise and vibrations in rolling contacts depend on the surface roughness of contacting bodies. LÄS MER
3. On the asperity point load mechanism for rolling contact fatigue
Sammanfattning : Rolling contact fatigue is a damage process that may arise in mechanical applications with repeated rolling contacts. Some examples are: gears; cams; bearings; rail/wheel contacts. The resulting damage is often visible with the naked eye as millimeter sized surface craters. LÄS MER
4. Progressives in use and contact : A descriptive, areal and typological study with special focus on selected Iranian languages
Sammanfattning : Progressives are grammatical patterns primarily used to refer to events that are ongoing at a specific time. This thesis investigates uses of such patterns in a number of languages as well as the interaction of a number of progressives in contact. LÄS MER
5. Noise in quantum point contacts
Sammanfattning : .... LÄS MER