Search for dissertations about: "finite element analysis of fatigue"

Showing result 6 - 10 of 63 swedish dissertations containing the words finite element analysis of fatigue.

2. 6. Fatigue Analysis of Welded Structures Using the Finite Element Method

   Author : Mustafa Aygül; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hot spot stress; effective notch stress; the finite element method; orthotropic bridge deck; welded details;

   Abstract : Fatigue design and analysis of steel and composite bridges is generally based on the notion of the nominal stress using the classified S-N curves with corresponding fatigue classes for typical details. Such an approach can yield unrealistic the estimation of the load effects for structure components because of an ever increasing number of structural details and loading situations resulting in a limited number of possible treatable design cases. READ MORE

4. 7. Fatigue Assessment of Container Ships – a Contribution to Direct Calculation Procedures

   Author : Zhiyuan Li; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; finite element analysis; container ship; warping stress; time-domain method; nonlinear panel method; full-scale measurement; side-shell structures; ship routing; stress concentration; fatigue;

   Abstract : Within the field of marine structural engineering, the introduction of new materials and material classes, the development of production techniques and new design, and new requirements imposed by authorities are examples which justify a need for continuous revisit and update of fatigue assessment methodologies of marine structures. This thesis contributes to the development and improvement of fatigue assessment methodology for ship structures. READ MORE

5. 8. Direct Calculation of Wave-Induced Loads and Fatigue Damage of Container Vessels

   Author : Zhiyuan Li; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; fatigue; stress concentration factor; direct calculation; Container ship; fatigue routing; wave-induced torsion.; extreme loading; nonlinear wave loads;

   Abstract : Container ships and their rules for fatigue design are in several ways differentcompared with other types of commercial ships such as tankers and bulk carriers. Forexample, most modern container ships have a pronounced bow flare and an overhangstern. READ MORE

6. 9. Fatigue Assessment of Friction Stir Welded Joints in Aluminium Profiles

   Author : Meysam Mahdavi Shahri; Rolf Sandström; Per Jahn Haagensen; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Friction stir welding; Fatigue; Aluminium alloys; Critical distance; Finite element method; Standard codes;

   Abstract : Friction stir welding (FSW) is a low heat input solid state welding technology. It is often used for fabrication of aluminium alloys in transportation applications including railway, shipbuilding, bridge structures and automotive components. READ MORE

7. 10. Structural Integrity Analysis of Critical Elements of RoPax Ships

   Author : Ulf Karlsson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; safety; IACS UR S8; RoRo; experiments; ship collision; RoPax; finite element analysis; event-chain; bow-door;

   Abstract : The potentially costly consequences of a lost ship in the form of fatalities, property, cargo and related industries, as well as pollution of the environment in the form of oil spill, etc., and the public view are the driving forces for developing safer ships. Especially RoRo-ferries, i.e. READ MORE