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1	Dvimačių struktūrų irimo modeliavimas naudojant prisitaikančiuosius baigtinių elementų tinklus / Simulation of 2D structures facture using adaptive finite element meshes Stupak, Eugeniuš 11 November 2004 (has links) In this work the h-adaptive FE strategy for solving 2D problems of fracture mechanics is developed and applicated. The stress indicator employed in the adaptive analysis is able to capture high gradients of stress in the vicinity of the defect. Performance of this technique is checked against the defects of different geometry. Finally the above-mentioned technique exposes its suitability for solving fracture problems. Mechanical Engineering Adaptive finite element meshes Irimas Fracture
2	Dvimačių struktūrų irimo modeliavimas naudojant prisitaikančiuosius baigtinių elementų tinklus / Simulation of 2D structures fracture using adaptive finite element meshes Stupak, Eugeniuš 12 November 2004 (has links) This summary of doctoral dissertation deal with modeling of fracture in various 2D structures. The standard experimental specimens with defects, which are used in evaluation of fracture parameters, are investigated numerically in this work. The original FE generation technique based on the adaptive approach is developed for the 2D structures with defects. The stress indicator employed in the adaptive analysis is able to capture high gradients of stress in the vicinity of the defect. Performance of this technique is checked against the defects of different geometry. Finally the above-mentioned technique exposes its suitability for solving fracture problems. Mechanical Engineering Adaptive finite element meshes Fracture Irimas
3	Behandlung gekrümmter Oberflächen in einem 3D-FEM-Programm für Parallelrechner Pester, M. 30 October 1998 (has links) (PDF) The paper presents a method for generating curved surfaces of 3D finite element meshes by mesh refinement starting with a very coarse grid. This is useful for parallel implementations where the finest meshes should be computed and not read from large files. The paper deals with simple geometries as sphere, cylinder, cone. But the method may be extended to more complicated geometries. (with 45 figures) finite element meshes curved surfaces mesh refinement parallel computing MSC 65Y05 MSC 65N30 ddc:510 ddc:004
4	Behandlung gekrümmter Oberflächen in einem 3D-FEM-Programm für Parallelrechner Pester, M. 30 October 1998 (has links) The paper presents a method for generating curved surfaces of 3D finite element meshes by mesh refinement starting with a very coarse grid. This is useful for parallel implementations where the finest meshes should be computed and not read from large files. The paper deals with simple geometries as sphere, cylinder, cone. But the method may be extended to more complicated geometries. (with 45 figures) info:eu-repo/classification/ddc/510 ddc:510 info:eu-repo/classification/ddc/004 ddc:004 finite element meshes curved surfaces mesh refinement parallel computing MSC 65Y05 MSC 65N30

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