Sökning: "nonlinear stability analysis"

Visar resultat 1 - 5 av 24 uppsatser innehållade orden nonlinear stability analysis.

1. 1. Coordinate­Free Spacecraft Formation Control with Global Shape Convergence under Vision­Based Sensing

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Omid Mirzaeedodangeh; [2023]
   Nyckelord :Bispherical Coordinates; 3D Formation Control; Spacecraft Formation Flying; Multiagent Systems; Prescribed Performance Control; Vision-Based Sensing; Bisfäriska Koordinater; 3D Formationskontroll; Rymdfarkostformationsflygning; Multiagentsystem; Föreskriven Prestandakontroll; Synbaserad Avkänning;

   Sammanfattning : Formation control in multi-agent systems represents a groundbreaking intersection of various research fields with lots of emerging applications in various technologies. The realm of space exploration also can benefit significantly from formation control, facilitating a wide range of functions from astronomical observations, and climate monitoring to enhancing telecommunications, and on-orbit servicing and assembly. LÄS MER

3. 2. An investigation of the design of cylinderical steel tanks modelled according to EN14015 and according to the Eurocodes

   Master-uppsats, Linnéuniversitetet/Institutionen för byggteknik (BY)

   Författare :Yonas Gebre; [2022]
   Nyckelord :Keywords: Steel tank; Wind; Snow; FEM; Shell buckling; Non-linear analysis;

   Sammanfattning : Abstract Storage tanks are above or below ground vessels for storing chemicals, petroleum and other liquid products. Above ground vertical cylindrical shells are typically thin walled structures prone to buckling and lose their stability especially when they are empty or have lower fluid level due to external loads. LÄS MER

4. 3. Jet fragmentation in shaped charges

   Master-uppsats, KTH/Matematik (Avd.)

   Författare :Joakim Ericson; [2022]
   Nyckelord :Shaped charges; numerical simulation; jet fragmentation; Riktad sprängverkan; numerisk simulering; strål-fragmentering;

   Sammanfattning : This master thesis treats the numerical simulation of shaped charge jets and its fragmentation process. Shaped charges is a method to concentrate the effect of an explosive charge and penetrate deeply into a target due to a the formation of a jet with great penetration capabilities. LÄS MER

5. 4. On the Identification of Nonlinear Optima in Spatially Developing Boundary Layer Flow

   Master-uppsats, KTH/Strömningsmekanik och Teknisk Akustik

   Författare :Emanuel Taschner; [2021]
   Nyckelord :transition to turbulence; nonlinear stability analysis; boundary layer flow; övergång till turbulens; icke-linjär stabilitetsanalys; gränsskiktsflöden;

   Sammanfattning : The present thesis studies transition to turbulence in a spatially developing bound-ary layer for subcritical Reynolds numbers. A fully nonlinear iterative direct-adjoint optimisation technique is employed to identify finite amplitude perturbations triggering transition in an energy efficient way. LÄS MER

7. 5. Numerical study of the effect of thermal ice loads on concrete dams

   Master-uppsats, KTH/Betongbyggnad

   Författare :Imal Zuwak; Wasseem Kordoghly; [2020]
   Nyckelord :Arch dam; Buttress dam; Concrete; Finite element analysis; Ice load; Valvdamm; Lamelldamm; Betong; Finit elementanalys; Islast;

   Sammanfattning : It is essential to understand the mechanics of ice load and how it affects concrete dams located in a cold climate, such as Sweden, where the temperature becomes sufficiently cold to freeze the surface of the reservoir. The purpose of this thesis is to study ice load distribution along concrete dams, and its response during the application of an ice load. LÄS MER