Sökning: "rough contact model"
Visar resultat 16 - 20 av 32 avhandlingar innehållade orden rough contact model.
16. Investigations on the Serviceability Limit State of Dowel-Type Timber Connections
Sammanfattning : Dowel-type steel-to-timber connections are commonly used to transfer a large range of loads. Although they are simple to produce and assemble, the load-carrying behavior and the local stress and strain distribution within the connection area are highly complex. LÄS MER
17. Nonlinear Interaction Between Ultrasonic Waves and Cracks and Interfaces
Sammanfattning : The subject of this thesis is the development of new ultrasound inspection techniques for detection of cracks that are smaller than the wavelength of the inspecting wave and the characterization of cracks in fluid-filled pipes as either surface-breaking or subsurface. The spectrum of the scattered field of a partially closed crack comprises harmonic components not expected to be found in the case of linear scatterers such as pores or inclusions. LÄS MER
18. Numerical models to simulate wear and friction-induced heating in rough surface contacts
Sammanfattning : The study of friction and wear is a crucial element in the effort to reduce carbon footprint in technology. It is evident that friction and wear are responsible for a significant amount of global energy losses, emphasizing the need for research on the topic. LÄS MER
19. Shear Strength of Unfilled and Rough Rock Joints in Sliding Stability Analyses of Concrete Dams
Sammanfattning : The horizontal water load combined with uplift forces implies that concrete damsare sensitive for sliding. At the same time, the safety of concrete dams againstsliding in the rock foundation is associated with large uncertainties. One of themain uncertainties regards the shear strength of rock joints. LÄS MER
20. Aspects of oral implant technology and osseointegration
Sammanfattning : Behandling med käkbensförankrade tandimplantat är en vanlig metod för att ersätta förlorade tänder hos helt och partiellt tandlösa patienter. Trots att implantatbehandling uppvisar en långsiktigt hög lyckande- och överlevnadsfrekvens (90–95% efter 10 år) så förekommer implantatförluster och marginal benförlust kring implantaten under det första året efter insättning och/eller belastning, vilket kan försämra det estetiska resultatet. LÄS MER