Essays about: "High-speed trains"

Showing result 21 - 25 of 42 essays containing the words High-speed trains.

1. 21. Reduction of Vertical Acceleration in High-speed Railway Bridges Using Post-installed Viscous Dampers : A case study of the Bothnia Line

   University essay from KTH/Bro- och stålbyggnad

   Author : Sarah Rådeström; Viktor Tell; [2014]
   Keywords : Structural dynamics; viscous dampers; high-speed trains; resonance; bridge design; bridge construction; Strukturdynamik; viskösa dämpare; höghastighetståg; resonans; brokonstruktion;

   Abstract : Several of the bridges along the Bothnia railway line do not fulfill the requirements regarding vertical accelerations that are stated in current design codes. The acceleration of the bridges needs to be reduced, in order to make the Bothnia line suitable for high speed railway traffic. READ MORE

3. 22. Soil Steel Composite Bridges for High-Speed Railways : 2D FEM analysis of the Björnbo Bridge

   University essay from KTH/Bro- och stålbyggnad

   Author : Joakim Woll; [2014]
   Keywords : Soil-Steel Composite Bridge; SSCB; Dynamic analysis; Björnbo Bridge; High-speed railways; FEM; Soil-Steel culvert; High-Speed Railway Soil-Steel Composite Bridge; Rörbro; Dynamisk analys; Björnbo rörbro; Höghastighetståg; FEM; Höghastighetståg rörbro; Dynamisk analys rörbro;

   Abstract : This research aims to analyse the dynamic behaviour of Soil-Steel Composite Bridges when subjected by high-speed trains. the analyses of the dynamic response for these structures are needed since there is little research performed in the present field of knowledge. READ MORE

4. 23. Active Control of the Pantograph-Catenary Interaction in a Finite Element Model

   University essay from KTH/Järnvägsteknik

   Author : Raphael Schär; [2013]
   Keywords : ;

   Abstract : This work analyzes the implementation of an active train pantograph in a full finite element model in the program Ansys. As controller design method, the H∞ method was taken in order to cope with the different uncertainties in the given system. The focus lies on the contact force between the pantograph and the catenary. READ MORE

5. 24. Numerical study of a wind tunnel setup for measuring train slipstream with Detached Eddy Simulation

   University essay from KTH/Fordonsdynamik

   Author : Yogeshwar Dhanabalan; [2013]
   Keywords : Train Aerodynamics; Slipstream; Detached Eddy Simulation;

   Abstract : High speed trains have become an integral part of the transportation systems around the world. With increasing speed, very high velocities are generated in the region around the train known as slipstream. Experimental studies have been conducted over the last few decades to study the effect of these phenomena. READ MORE

6. 25. Crosswind assessment of trains on different ground configurations

   University essay from KTH/Järnvägsteknik

   Author : Nachiyappan Venkatasalam; [2013]
   Keywords : Crosswind; ICE3; true flat ground TFG ; single track ballast and rail STBR ; atmospheric boundary layer ABL ; AeroTRAIN; CFD.;

   Abstract : Cross wind analysis is one of the important safety measures for rail vehicle certification. The objective of this study is to identify which vehicle certification ground setup, true flat ground (TFG) or single track ballast and rail (STBR) represents a more realistic ground setup with atmospheric boundary layer (ABL) wind inlet and also to represent an embankment scenario. READ MORE