Simulation of Freight Trains Equipped with Partially Filled Tank Containers and Related Resonance Phenomenon

Vera, Carlos; Paulin, Jenny; Suárez Esteban, Berta y Gutiérrez, Mariano (2005). Simulation of Freight Trains Equipped with Partially Filled Tank Containers and Related Resonance Phenomenon. "Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit", v. 219 (n. 4); pp. 245-259. ISSN 0954-4097. https://doi.org/10.1243/095440905X8916.

Descripción

Título: Simulation of Freight Trains Equipped with Partially Filled Tank Containers and Related Resonance Phenomenon
Autor/es:
  • Vera, Carlos
  • Paulin, Jenny
  • Suárez Esteban, Berta
  • Gutiérrez, Mariano
Tipo de Documento: Artículo
Título de Revista/Publicación: Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit
Fecha: 1 Julio 2005
Volumen: 219
Materias:
Palabras Clave Informales: screw couplings; freight wagons; liquid cargo; sloshing; resonance
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Ingeniería Mecánica y de Fabricación [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

Texto completo

[img]
Vista Previa
PDF (Document Portable Format) - Se necesita un visor de ficheros PDF, como GSview, Xpdf o Adobe Acrobat Reader
Descargar (5MB) | Vista Previa

Resumen

To study the fluid motion-vehicle dynamics interaction, a model of four, liquid filled two-axle container freight wagons was set up. The railway vehicle has been modelled as a multi-body system (MBS). To include fluid sloshing, an equivalent mechanical model has been developed and incorporated. The influence of several factors has been studied in computer simulations, such as track defects, curve negotiation, train velocity, wheel wear, liquid and solid wagonload, and container baffles. SIMPACK has been used for MBS analysis, and ANSYS for liquid sloshing modelling and equivalent mechanical systems validation. Acceleration and braking manoeuvres of the freight train set the liquid cargo into motion. This longitudinal sloshing motion of the fluid cargo inside the tanks initiated a swinging motion of some components of the coupling gear. The coupling gear consists of UIC standard traction hooks and coupling screws that are located between buffers. One of the coupling screws is placed in the traction hook of the opposite wagon thus joining the two wagons, whereas the unused coupling screw rests on a hanger. Simulation results showed that, for certain combinations of type of liquid, filling level and container dimensions, the liquid cargo could provoke an undesirable, although not hazardous, release of the unused coupling screw from its hanger. The coupling screw's release was especially obtained when a period of acceleration was followed by an abrupt braking manoeuvre at 1 m/s2. It was shown that a resonance effect between the liquid's oscillation and the coupling screw's rotary motion could be the reason for the coupling screw's undesired release. Possible solutions to avoid the phenomenon are given.Acceleration and braking manoeuvres of the freight train set the liquid cargo into motion. This longitudinal sloshing motion of the fluid cargo inside the tanks initiated a swinging motion of some components of the coupling gear. The coupling gear consists of UIC standard traction hooks and coupling screws that are located between buffers. One of the coupling screws is placed in the traction hook of the opposite wagon thus joining the two wagons, whereas the unused coupling screw rests on a hanger. This paper reports on a study of the fluid motion-train vehicle dynamics interaction. In the study, a model of four, liquid-filled two-axle container freight wagons was developed. The railway vehicle has been modeled as a multi-body system (MBS). To include fluid sloshing, an equivalent mechanical model has been developed and incorporated. The influence of several factors has been studied in computer simulations, such as track defects, curve negotiation, train velocity, wheel wear, liquid and solid wagonload, and container baffles. A simulation program was used for MBS analysis, and a finite element analysis program was used for liquid sloshing modeling and equivalent mechanical systems validation. Acceleration and braking maneuvers of the freight train set the liquid cargo into motion. This longitudinal sloshing motion of the fluid cargo inside the tanks initiated a swinging motion of some components of the coupling gear. Simulation results showed that, for certain combinations of type of liquid, filling level and container dimensions, the liquid cargo could provoke an undesirable, although not hazardous, release of an unused coupling screw from its hanger. It was shown that a resonance effect between the liquid's oscillation and the coupling screw's rotary motion could be the reason for the coupling screw's undesired release. Solutions are suggested to avoid the resonance problem, and directions for future research are given.

Más información

ID de Registro: 12670
Identificador DC: http://oa.upm.es/12670/
Identificador OAI: oai:oa.upm.es:12670
Identificador DOI: 10.1243/095440905X8916
URL Oficial: http://intl-pif.sagepub.com/content/219/4/245.abstract
Depositado por: Berta Suárez Esteban
Depositado el: 03 Sep 2012 11:39
Ultima Modificación: 21 Abr 2016 11:57
  • Open Access
  • Open Access
  • Sherpa-Romeo
    Compruebe si la revista anglosajona en la que ha publicado un artículo permite también su publicación en abierto.
  • Dulcinea
    Compruebe si la revista española en la que ha publicado un artículo permite también su publicación en abierto.
  • Recolecta
  • e-ciencia
  • Observatorio I+D+i UPM
  • OpenCourseWare UPM