Sökning: "ballast"

Visar resultat 1 - 5 av 47 avhandlingar innehållade ordet ballast.

  1. 1. Simulation of track settlement in railway turnouts-An iterative approach

    Författare :Xin Li; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; track settlement; Railway switch and crossing; cyclic loading; visco-plasticity; vehicle‒track interaction; 3D finite element analysis; granular material; ballast;

    Sammanfattning : In this thesis, a methodology for simulation of track settlement in railway turnouts (switches andcrossings, S&C) is presented. The methodology predicts the accumulated settlement for a given setof traffic loads using an iterative and cross-disciplinary procedure. LÄS MER

  3. 2. Prediction of Cone Crusher Performance

    Författare :Magnus Evertsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; crushing; fragmentation; ballast; modelling; simulation;

    Sammanfattning : .... LÄS MER

  4. 3. Preliminaries for probabilistic railway sleeper design

    Författare :Johanna Lilja; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sensor placement; factorial design; Railway sleeper; ballast; load variation; stochastic parameters; correlation length;

    Sammanfattning : Two investigations are presented, which can be seen ascontributions to the aim of introducing a probabilistic designstrategy of railway sleepers in the future. When usingprobabilistic design the statistics of all relevant parametersconsidered as stochastic must be known. LÄS MER

  5. 4. Stratification and passage processes in rock material screening

    Författare :Monica Soldinger Stafhammar; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; modelling; simulation; stratification; ballast; sieving; screening;

    Sammanfattning : .... LÄS MER

  7. 5. 3-D Characterization and Degradation Analysis of Rock aggregates

    Författare :Pasi Tolppanen; KTH; []
    Nyckelord :3-dimension; 3-D; laser scanning; aggregate; ballast; characterization; size; shape; volume; roughness; Fast Fourier analysis; fractal; degradation;

    Sammanfattning : .... LÄS MER