Sökning: "fictitious domain methods"
Visar resultat 1 - 5 av 6 avhandlingar innehållade orden fictitious domain methods.
1. High Order Cut Finite Element Methods for Wave Equations
Sammanfattning : This thesis considers wave propagation problems solved using finite element methods where a boundary or interface of the domain is not aligned with the computational mesh. Such methods are usually referred to as cut or immersed methods. LÄS MER
2. Approximation of topology optimization problems using sizing optimization problems
Sammanfattning : The present work is devoted to approximation techniques for singular extremal problems arising from optimal design problems in structural and fluid mechanics. The thesis consists of an introductory part and four independent papers, which however are united by the common idea of approximation and the related application areas. LÄS MER
3. Boundary Shape Optimization Using the Material Distribution Approach
Sammanfattning : .... LÄS MER
4. Parallel Numerical Procedures for the Solution of Contact-Impact Problems
Sammanfattning : Finite element (FE) simulations of complex problems tend to yield very large models if detailed knowledge of the problem is required. As the model becomes larger, the time needed for solving the problem increases. The solution time is even longer if contact is present in the model. LÄS MER
5. On Nuclear Norm Minimization in System Identification
Sammanfattning : In system identification we model dynamical systems from measured data. This data-driven approach to modelling is useful since many real-world systems are difficult to model with physical principles. Hence, a need for system identification arises in many applications involving simulation, prediction, and model-based control. LÄS MER