Search for dissertations about: "Elias Kassa"

Found 2 swedish dissertations containing the words Elias Kassa.

  1. 1. Dynamic train-turnout interaction: : mathematical modelling numerical simulation and field testing

    University dissertation from Göteborg : Chalmers University of Technology

    Author : Elias Kassa Gebretsadik; Elias Kassa; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SRA - Transport; SRA - Transport; contact forces; Karhunen–Loève expansion; dynamic train–turnout interaction; field test; wheel–rail contact geometry; stochastic analysis; switches and crossings;

    Abstract : Two models for simulation of dynamic interaction between train and turnout are developed. The first one is derived using a commercial software for dynamics of multi-body systems. READ MORE

  2. 2. Simulation of dynamic interaction between train and turnout

    University dissertation from Göteborg : Chalmers university press

    Author : Elias Kassa Gebretsadik; Elias Kassa; [2004]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SRA - Transport; SRA - Transport; dynamic train–turnout interaction; wheel–rail contact geometry; switches and crossings; multibody dynamics; contact forces;

    Abstract : Dynamic train–track interaction is more complex in railway turnouts (switches & crossings) than on ordinary tangent or curved tracks. Multiple contacts between wheel and rail are common, and severe impact loads with broad frequency contents are induced when the nominal wheel–rail contact conditions are disturbed due to the continuous variation in rail profiles and the discontinuities in the crossing panel. READ MORE