Sökning: "nonlinear contact"
Visar resultat 6 - 10 av 49 avhandlingar innehållade orden nonlinear contact.
6. Impact loading on concrete structures : a constitutive modelling, finite element analysis, and experimental study of nonlinear wave propagation
Sammanfattning : .... LÄS MER
7. Nonlinear Elasticity of Fiber Masses
Sammanfattning : The mechanical properties of fiber masses are important in many fields of engineering such as upholstery, paper making, and composite manufacturing, and a fair amount of work has gone into analyzing these properties. However, previous theories have been limited to simple deformations and a restrictive choice of deformation mechanism. LÄS MER
8. Concept evaluation and contact problems in simple rotordynamical systems
Sammanfattning : Rotating machines serves an important role in many different applications. Extensive research has been made, manly during the last century, in order to develop these systems and understand the dynamics. The theory of rotordynamics differs in many fundamental aspects from structural dynamics and is therefore usually treated as an own research area. LÄS MER
9. 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
10. Numerical modelling and analysis of friction contact for turbine blades
Sammanfattning : High cycle fatigue failure of turbine and compressor blades due to resonance in the operating frequency range is one of the main problems in the design of gas turbine engines. To suppress excessive vibrations in the blades and prevent high cycle fatigue, dry friction dampers are used by the engine manufacturers. LÄS MER