Sökning: "wheelset"

Visar resultat 1 - 5 av 22 avhandlingar innehållade ordet wheelset.

  1. 1. Wheelset structural flexibility and vehicle-track dynamic interaction

    Författare :Nizar Chaar; KTH; []
    Nyckelord :wheelset; structural flexibility; modal analysis; vehicle-track interaction; wheel-rail forces; mathematical modelling; simulations; measurements;

    Sammanfattning : .... LÄS MER

  2. 2. Influence of wheel tread damage on wheelset and track loading – Field tests and numerical simulations

    Författare :Michele Maglio; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; axle stress; instrumented wheelset; impact loads; dynamic wheel–rail interaction; wheelset maintenance; wheel tread damage;

    Sammanfattning : Wheel tread damage leading to high magnitudes of vertical wheel–rail contact forces is a major cause of train delays in the Swedish railway network, in particular during the coldest months of the year. According to regulations, vehicles generating contact forces exceeding the limit value for allowed wheel–rail impact loads must be taken out of service for wheel maintenance. LÄS MER

  3. 3. Análisis dinámico de un eje de ferrocarril con capacidad de cambio de ancho automático

    Författare :Carlos Casanueva; José Germán Giménez; Asier Alonso; Javier Gil Sevillano; Jordi Vinolas; Jesús M. Busturia; Xabier Pérez; Eduardo Gómez; University of Navarra CEIT and Tecnun; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; variable gauge wheelset; railway dynamics; ; eje de ancho variable; dinámica ferroviaria; Järnvägsgruppen - Fordonsteknik; Järnvägsgruppen - Fordonsteknik;

    Sammanfattning : El objetivo de la presente tesis es la mejora de los actuales ejes de ancho variable para su circulación por vías de alta velocidad (AV) a velocidades de hasta 300km/h. En la actualidad los vehículos con ejes de ancho variable no sobrepasan los 250km/h de velocidad de servicio en vías de AV, lo que supone un claro desaprovechamiento de recursos y dificultades de gestión del tráfico para el gestor de la infraestructura a causa de las distintas velocidades punta de los diferentes trenes. LÄS MER

  4. 4. Análisis dinámico de un eje de ferrocarril con capacidad de cambio de ancho automático

    Författare :Carlos Casanueva; José Germán Giménez; Asier Alonso; José María Bastero; Justino Fernandez; University of Navarra CEIT and Tecnun; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; variable gauge wheelset; railway dynamics; Järnvägsgruppen - Fordonsteknik; Järnvägsgruppen - Fordonsteknik;

    Sammanfattning : .... LÄS MER

  5. 5. Wheelset Structural Flexibility and Track Flexibility in Vehicle-Track Dynamic Interaction

    Författare :Nizar Chaar; Stefano Bruni; KTH; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Vehicle-track dynamic interaction; wheelset structural flexibility; Structural and vibration physics; Struktur- och vibrationsfysik;

    Sammanfattning : This thesis investigates the influence of wheelset structural flexibility and track flexibility on the vehicle-track dynamic interaction, mainly in terms of wheel-rail forces up to 200 Hz, using simulations and measurements. The previous knowledge in this field is first reviewed and summarized, then two case studies are selected for investigation. LÄS MER