Search for dissertations about: "Non-linear FE-analysis"

Showing result 1 - 5 of 16 swedish dissertations containing the words Non-linear FE-analysis.

  2. 1. Computational Road Mechanics - with Emphasis on FE-analysis of Rutting

    Author : Johan Olsson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; non-linear FEM; multi-layer structure; asphalt concrete; road design; material models; unbound material;

    Abstract : A road is a very complex structure in which a large number of different structural phenomena occur simultaneously that effects its expected lifetime. The structure itself is of a multi-layer type, in which the different layers consist of materials that exhibit vastly different physical behaviors when subjected to various kinds of loads. READ MORE

  4. 2. Restraint Effects in Concrete Bridges : A Study of Cracking due to Thermal Actions and Shrinkage in Portal Frame Bridges

    Author : Erik Gottsäter; Avdelningen för Konstruktionsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tvång; Betong; Uppsprickning; Temperaturlast; Plattrambro; FE-analys; Restraint; Concrete; Cracking; Thermal action; Portal frame bridge; FE-analysis;

    Abstract : Thermal actions and shrinkage cause volume changes in concrete structures. In structures which are restrained from movements, the restraint effects can cause cracking. However, when cracking occurs, the structure can deform to some extent, which reduces the restraint stresses and thus also the crack widths. READ MORE

  5. 3. Bridge Overhang Slabs with Edge Beams : LCCA and Structural Analysis for the Development of New Concepts

    Author : José Javier Veganzones Muñoz; Costin Pacoste; Raid Karoumi; Lars Pettersson; Rui Vaz Rodrigues; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Overhang slab; Edge beam; Life-cycle Cost Analysis; Non-linear FE-analysis; Design methods; Shear force; Failure mode; Effective width; Minimal width.; Konsolplattor; Kantbalkar; Livscykelkostnadsanalys; Icke-linjär FE-analys; Dimensioneringsmetoder; Tvärkrafter; Brott; Fördelningsbredd; Minimal bredd.; Bro- och stålbyggnad; Structural Engineering and Bridges;

    Abstract : Bridge edge beams are associated with high life-cycle costs because of the need of maintenance, which also causes traffic disturbances. For this reason, the Swedish Transport Administration started a project to find better solutions. One of the proposals was a design without edge beam. READ MORE

  6. 4. Structural Effects of Reinforcement Corrosion in Concrete Structures

    Author : Mohammad Tahershamsi; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; experiments; load-carrying capacity; anchorage; pitting; FE analysis; natural corrosion; Bond properties; damage assessment; modelling.; structural behaviour; reinforced concrete structures; 3D optical scanning; inspection;

    Abstract : Reinforcement corrosion is a common cause of deterioration in reinforced concrete.The corrosion mechanism involved and the consequent structural behaviour ofdeteriorated reinforced concrete members have been studied by several researchers. READ MORE

  7. 5. Shear cracks in concrete structures subjected to in-plane stresses

    Author : Richard Malm; Håkan Sundquist; Kent Gylltoft; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Shear; plane state stress; crack width; FE analysis; design standards; serviceability state; Civil engineering and architecture; Samhällsbyggnadsteknik och arkitektur;

    Abstract : After only two years of service, extensive cracking was found in the webs of two light-rail commuter line bridges in Stockholm, the Gröndal and Alvik bridges. Due to this incident it was found necessary to study the means available for analysing shear cracking in concrete structures subjected to in-plane stresses. READ MORE