Inlämning av Examensarbete / Submission of Thesis

Saeed Hossein Nia BTH-AMT-EX--2011/D-04--SE, pp. 80. ING/School of Engineering, 2011.

The work

Författare / Author: Saeed Hossein Nia
Titel / Title: Dynamic model of freight wagon
Översatt titel / Translated title: Dynamic model of freight wagon
Abstrakt Abstract:

The Swedish iron ore company LKAB uses freight wagon to transport iron ore from the mines in Kiruna and Malmberget to Luleå and Narvik. Within a research project at KTH Rail Vehicles a simulation model of the freight vehicle has been built up within the Multibody simulation code GENSYS. This work is defined along with the mentioned project to investigate the possible sources of RCF of the wheels while the number of damages especially in winters is considerably high. The new track model is built with both concrete and wooden sleepers. Dynamic properties of the track are set, mostly, by using measured receptances; however, PSD of the vertical track forces are also compared to tune the system. Validation of the model is done via comparing simulation and measurement. Modal analysis is performed to detect any possible resonances. The shakedown map is used to study the influence of increase in track forces on the RCF. It is shown that using concrete sleepers might be a reason of rise in the vertical track forces in winter. There might also be a resonance between the bolster of the three-piece bogie and the sleeper passing frequency as well as carbody and the hunting frequency of the vehicle.

Ämnesord / Subject: Maskinteknik - Mechanical Engineering\General
Maskinteknik - Mechanical Engineering\Structural Dynamics
Nyckelord / Keywords: Track, modeling, simulation, rolling contact fatigue, freight wagon, three-piece bogie

Publication info

Dokument id / Document id: houn-8mjhsk
Program:/ Programme Masters Programme in Mechanical Engineering 120 ECTS
Registreringsdatum / Date of registration: 10/11/2011
Uppsatstyp / Type of thesis: Masterarbete/Master's Thesis (120 credits)


Handledare / Supervisor: Dr. Ansel Berghuvud
Organisation / Organisation: Blekinge Institute of Technology
Institution / School: ING/School of Engineering

+46 455 38 50 00
I samarbete med / In co-operation with: LKAB
Anmärkningar / Comments:

C/O Mandana Mokhtary
Amanuensvägen 14 / 1003
11416 Stockholm

Files & Access

Bifogad uppsats fil(er) / Files attached: bth2011hossein nia.pdf (3247 kB, öppnas i nytt fönster)