Search for dissertations about: "the finite element method"

Showing result 16 - 20 of 836 swedish dissertations containing the words the finite element method.

2. 16. Adaptive Finite Element Procedures in Structural Dynamics

   Author : Xiangdong Li; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; finite element; h-adaptivity; Newmark method; structural dynamics; space-time; a posteriori; superconvergent patch recovery; postprocessing; automatic time-stepping; semidiscretization; error estimation; discontinuous Galerkin;

   Abstract : This thesis deals with a posteriori error estimation and adaptivity in finite element procedures for the analysis of structural dynamic problems. First, error estimation and adaptivity for the Newmark time integration method are studied. READ MORE

4. 17. Finite element approximation of the linear stochastic Cahn-Hilliard equation

   Author : Ali Mesforush; Göteborgs universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Cahn-Hilliard-Cook equation; finite element method; backward Euler method; error estimate; strong convergence; backward Euler method;

   Abstract : The linearized Cahn-Hilliard-Cook equation is discretized in the spatial variables by a standard finite element method. Strong convergence estimates are proved under suitable assumptions on the covariance operator of the Wiener process, which is driving the equation. The backward Euler time stepping is also studied. READ MORE

5. 18. Investigations of unconventional marine structures by the finite element method

   Author : Mats Heder; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; OBO-vessels; hull strength; stiffened panel; finite element method; passenger ship; thermal stress; buckling; residual strength;

   Abstract : .... READ MORE

6. 19. Finite Element Modeling of the Human Head

   Author : Svein Kleiven; KTH; []
   Keywords : Finite element method FEM ; Human head; brain; head injury; epidemiology; statistics; simulations.;

   Abstract : The main objectives of the present thesis were to define the dimension of head injuries in Sweden over a longer period and to present a Finite Element (FE) model of the human head which can be used for preventive strategies in the future. The annual incidence of head injuries in Sweden between 1987 and 2000 was defined at over 22 000, cases most of which were mild head injuries. READ MORE

7. 20. High Order Symmetric Finite Difference Schemes for the Acoustic Wave Equation

   Author : Abraham Zemui; Bertil Gustafsson; Leif Abrahamsson; Per Weinerfelt; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; finite element method; mass lumping; high order; finite difference method; wave equation; Numerical Analysis; Numerisk analys;

   Abstract : When someone speaks, or when a piano is played, sound waves are spread through the room. Physically the propagation of sound is governed by the acoustic wave equation. This thesis deals with the problem of finding solutions to this equation by numerical methods. READ MORE