Sökning: "MATEMATIK Tillämpad matematik"
Visar resultat 16 - 20 av 235 avhandlingar innehållade orden MATEMATIK Tillämpad matematik.
16. Asymptotic analysis of a nonlinear partial differential equation in a semicylinder
Sammanfattning : We study small solutions of a nonlinear partial differential equation in a semi-infinite cylinder. The asymptotic behaviour of these solutions at infinity isdetermined. First, the equation under the Neumann boundary condition is studied. LÄS MER
17. Asymptotic analysis of solutions to elliptic and parabolic problems
Sammanfattning : In the thesis we consider two types of problems. In Paper 1, we studysmall solutions to a time-independent nonlinear elliptic partial differential equation of Emden-Fowler type in a semi-infnite cylinder. The asymptotic behaviour of these solutions at infnity is determined. First, the equation under the Neumann boundary condition is studied. LÄS MER
18. Existence theorems for noncoercive incremental contact problems with Coulomb friction
Sammanfattning : Friction is a phenomenon which is present in most mechanical devices and frequently encountered in everyday life. In particular, understanding of this phenomenon is important in the modelling of contact between an elastic object and an obstacle. LÄS MER
19. Study of equations for Tippe Top and related rigid bodies
Sammanfattning : The Tippe Top consist of a small truncated sphere with a peg as a handle. When it is spun fast enough on its spherical part it starts to turn upside down and ends up spinning on the peg. LÄS MER
20. Analysis of the phase space, asymptotic behavior and stability for heavy symmetric top and tippe top
Sammanfattning : In this thesis we analyze the phase of the heavy symmetric top and the tippe top. These tops are two examples of physical systems for which the usefulness of integrals of motion and invariant manifolds, in phase space picture analysis, can be illustratedIn the case of the heavy symmetric top, simplified proofs of stability of the vertical rotation have been perpetuated by successive textbooks during the last century. LÄS MER