Search for dissertations about: "adaptive time-stepping"

Showing result 1 - 5 of 7 swedish dissertations containing the words adaptive time-stepping.

2. 1. Adaptive Geometric Numerical Integration of Mechanical Systems

   Author : Klas Modin; Matematik LTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; multibody dynamics; Geometric numerical integration; rolling bearing simulation; adaptive time-stepping; variable time-step;

   Abstract : This thesis is about structure preserving numerical integration of initial value problems, i.e., so called geometric numerical integrators. READ MORE

4. 2. Computational Stability and Adaptive Strategies - An Experimental Study of ODE Software

   Author : Lina Wang; Matematik LTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; algorithm analysis; Mathematical software; RADAU5; DASSL; digital filters; PI control; adaptive time-stepping; stepsize control; computational stability; test protocol; Computer science; numerical analysis; systems; control; Datalogi; numerisk analys; system; kontroll;

   Abstract : The algorithmic content of adaptive ODE/DAE software is dominated by a considerable amount of control structures, support algorithms and logic. The control logic has been largely heuristic and lacking support by analysis. READ MORE

5. 3. 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

6. 4. On adaptive finite element procedures for static and dynamic problems

   Author : Ling Fu Zeng; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; error estimate; elastostatic; post-processing; accuracy; finite element; elastodynamic; h-version; Newmark time integration; adaptivity; interpolation; automatic time-stepping; a posteriori;

   Abstract : .... READ MORE

7. 5. Adaptive Solvers for High-Dimensional PDE Problems on Clusters of Multicore Processors

   Author : Magnus Grandin; Sverker Holmgren; Michael Thuné; Michael Bader; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; adaptive mesh refinement; anisotropic refinement; exponential integrators; Lanczos algorithm; hybrid parallelization; time-dependent Schrödinger equation; Scientific Computing; Beräkningsvetenskap;

   Abstract : Accurate numerical solution of time-dependent, high-dimensional partial differential equations (PDEs) usually requires efficient numerical techniques and massive-scale parallel computing. In this thesis, we implement and evaluate discretization schemes suited for PDEs of higher dimensionality, focusing on high order of accuracy and low computational cost. READ MORE