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Publications (10 of 17) Show all publications
Krishna, V. V., Hossein Nia, S., Casanueva, C. & Stichel, S. (2019). FR8RAIL Y25 running gear for high tonnage and speed. In: P.O. Larsson-Kråik, A. Ahmadi (Ed.), Proceeedings of the International Heavy Haul Association STS Conference 2019: . Paper presented at International Heavy Haul Association STS Conference, on the 10th – 14th June 2019, in Narvik, Norway. (pp. 690-697). Narvik
Open this publication in new window or tab >>FR8RAIL Y25 running gear for high tonnage and speed
2019 (English)In: Proceeedings of the International Heavy Haul Association STS Conference 2019 / [ed] P.O. Larsson-Kråik, A. Ahmadi, Narvik, 2019, p. 690-697Conference paper, Published paper (Refereed)
Abstract [en]

The rolling stock in railway freight transport has traditionally been mainly characterised by lowcost, long lifetime of the fleet, and relatively low requirements on running behaviour. However, the sector inEurope has acknowledged that in order to be competitive there is a need to develop more advanced wagons thatenable to maximise payload and speed in different scenarios, while reducing the overall system costs, includingwheelset and track deterioration. In the Shift2Rail project FR8RAIL, a consortium of wagon manufacturers,wheelset manufacturers, and research centres has worked to develop a new generation of the widely used robustY25 freight running gear, that minimises maintenance costs both on the vehicle and the track by improving thecurving performance and hunting stability. The dynamic behaviour of the proposed solutions has been studiedwith simulations-based EN14363 tests up to 30 tons/axle, and their expected impact on wheel wear and fatiguehas also been predicted, with satisfactory results regarding both damage modes.

Place, publisher, year, edition, pages
Narvik: , 2019
National Category
Vehicle Engineering
Research subject
Järnvägsgruppen - Fordonsteknik
Identifiers
urn:nbn:se:kth:diva-255024 (URN)9780911382709 (ISBN)9780911382716 (ISBN)
Conference
International Heavy Haul Association STS Conference, on the 10th – 14th June 2019, in Narvik, Norway.
Funder
EU, Horizon 2020, 730617
Note

QC 20190827

Available from: 2019-07-12 Created: 2019-07-12 Last updated: 2019-09-03Bibliographically approved
Six, K., Mihalj, T., Trummer, G., Marte, C., Krishna, V. V., Hossein Nia, S. & Stichel, S. (2018). Assessment of running gears regarding rolling contact fatigue of wheels and rails based on stochastic simulations. In: Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018: . Paper presented at 11th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, CM 2018, 24 September 2018 through 27 September 2018 (pp. 878-885). TU Delft
Open this publication in new window or tab >>Assessment of running gears regarding rolling contact fatigue of wheels and rails based on stochastic simulations
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2018 (English)In: Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018, TU Delft , 2018, p. 878-885Conference paper, Published paper (Refereed)
Abstract [en]

In this work a methodology is presented to assess running gears with respect to wheel and rail rolling contact fatigue (RCF). This assessment is based on wheel/rail contact data for different wheel profile wear states taken from a wheel profile prediction methodology. The approach allows e.g. The assessment of rail RCF in different curve radii in a cumulative way (sum of damage over lifetime of wheel profiles). Furthermore, RCF assessments can be done at different wear states of the wheel profiles to get insight how the contribution to wheel and rail RCF varies depending on the evolution of the wheel profiles. The presented methodology is exemplary applied to two bogie types, the UIC-Y25 standard bogie and the so called FR8RAIL bogie with a mechanical wheelset steering device. The presented methodology is a helpful tool e.g. To optimize vehicles already in an early stage of the development process. 

Place, publisher, year, edition, pages
TU Delft, 2018
Keywords
Bogie, Freight wagon., Rail, Rolling contact fatigue, Running gear, Wear, Wheel, Bogies (railroad rolling stock), Damage detection, Deformation, Fatigue of materials, Friction, Rails, Stochastic models, Stochastic systems, Wear of materials, Development process, Freight wagon, Stochastic simulations, Wheel profile wears, Wheel/rail contact, Wheels
National Category
Vehicle Engineering
Identifiers
urn:nbn:se:kth:diva-247433 (URN)2-s2.0-85059511124 (Scopus ID)9789461869630 (ISBN)
Conference
11th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, CM 2018, 24 September 2018 through 27 September 2018
Note

QC20190502

Available from: 2019-05-02 Created: 2019-05-02 Last updated: 2019-05-02Bibliographically approved
Hossein Nia, S., Casanueva, C., Stichel, S. & Sichani, M. S. (2018). Prediction of rolling contact fatigue (RCF) for iron-ore locomotive wheels; comparison of an alternative contact algorithm with FASTSIM. In: The Dynamics of Vehicles on Roads and Tracks: . Paper presented at 25th Symposium of the International Association of Vehicle System Dynamics, IAVSD 2017, 14 August 2017 through 18 August 2017 (pp. 835-840). CRC Press/Balkema
Open this publication in new window or tab >>Prediction of rolling contact fatigue (RCF) for iron-ore locomotive wheels; comparison of an alternative contact algorithm with FASTSIM
2018 (English)In: The Dynamics of Vehicles on Roads and Tracks, CRC Press/Balkema , 2018, p. 835-840Conference paper, Published paper (Refereed)
Abstract [en]

In this article, a model to estimate the evolution of surface initiated Rolling Contact Fatigue (RCF) is developed and applied to a heavy haul locomotive. To consider the changes in the wheel profile due to wear, a methodology based on Archard’s wear calculation theory is used. The method is based on the load collective concept, which determines a set of dynamic time-domain simulations as representative for the line. For RCF calculations a shakedown based theory is applied locally, using the FaStrip algorithm to estimate the tangential stresses instead of FASTSIM. The differences between the two algorithms regarding damage prediction models are studied. The differences are due to the accumulation of the FASTSIM error in the long-term process. The simulated crack locations and their angles are compared with a five-year field study and good agreements are achieved.

Place, publisher, year, edition, pages
CRC Press/Balkema, 2018
Keywords
Fatigue of materials, Friction, Iron ores, Locomotives, Wheels, Calculation theories, Contact algorithms, Damage prediction models, Locomotive wheels, Long term process, Rolling contact fatigue, Surface-initiated, Tangential stress, Time domain analysis
National Category
Vehicle Engineering
Identifiers
urn:nbn:se:kth:diva-247406 (URN)000468325100052 ()2-s2.0-85061530651 (Scopus ID)9781138035713 (ISBN)
Conference
25th Symposium of the International Association of Vehicle System Dynamics, IAVSD 2017, 14 August 2017 through 18 August 2017
Note

QC20190418

Available from: 2019-04-18 Created: 2019-04-18 Last updated: 2019-06-11Bibliographically approved
Stichel, S., Casanueva, C., Berg, M. & Hossein Nia, S. (2018). Wear and RCF prediction based on improved contact mechanics modelling. In: : . Paper presented at 11th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, CM 2018; Delft; Netherlands; 24-27 September 2018.
Open this publication in new window or tab >>Wear and RCF prediction based on improved contact mechanics modelling
2018 (English)Conference paper, Oral presentation with published abstract (Other academic)
Keywords
wheel-rail contact, RCF, wear
National Category
Vehicle Engineering
Research subject
Vehicle and Maritime Engineering
Identifiers
urn:nbn:se:kth:diva-245040 (URN)
Conference
11th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, CM 2018; Delft; Netherlands; 24-27 September 2018
Note

QC 20190305

Available from: 2019-03-05 Created: 2019-03-05 Last updated: 2019-03-05Bibliographically approved
Hossein Nia, S., S. Sichani, M., Casanueva, C. & Stichel, S. (2018). Wheel life prediction model – an alternative to the FASTSIM algorithm for RCF. Vehicle System Dynamics, 56(7), 1051-1071
Open this publication in new window or tab >>Wheel life prediction model – an alternative to the FASTSIM algorithm for RCF
2018 (English)In: Vehicle System Dynamics, ISSN 0042-3114, E-ISSN 1744-5159, Vol. 56, no 7, p. 1051-1071Article in journal (Refereed) Published
Abstract [en]

In this article, a wheel life prediction model considering wear and rolling contact fatigue (RCF) is developed and applied to a heavy-haul locomotive. For wear calculations, a methodology based on Archard's wear calculation theory is used. The simulated wear depth is compared with profile measurements within 100,000km. For RCF, a shakedown-based theory is applied locally, using the FaStrip algorithm to estimate the tangential stresses instead of FASTSIM. The differences between the two algorithms on damage prediction models are studied. The running distance between the two reprofiling due to RCF is estimated based on a Wohler-like relationship developed from laboratory test results from the literature and the Palmgren-Miner rule. The simulated crack locations and their angles are compared with a five-year field study. Calculations to study the effects of electro-dynamic braking, track gauge, harder wheel material and the increase of axle load on the wheel life are also carried out.

Place, publisher, year, edition, pages
Taylor & Francis, 2018
Keywords
RCF, wear, rolling contact, heavy haul, FASTSIM, FaStrip
National Category
Engineering and Technology
Identifiers
urn:nbn:se:kth:diva-220340 (URN)10.1080/00423114.2017.1403636 (DOI)000432220800004 ()
Note

QC 20171219

Available from: 2017-12-18 Created: 2017-12-18 Last updated: 2018-05-31Bibliographically approved
Prevolnik, R., Casanueva, C. & Hossein Nia, S. (2017). On estimating the risk of wheel damage for wagons with paper rolls considering various dynamic conditions. In: Proceedings of the 11th International Heavy Haul Association Conference IHHA: . Paper presented at 11th International Heavy Haul Association Conference IHHA, 2-6 September, 2017.
Open this publication in new window or tab >>On estimating the risk of wheel damage for wagons with paper rolls considering various dynamic conditions
2017 (English)In: Proceedings of the 11th International Heavy Haul Association Conference IHHA, 2017Conference paper, Published paper (Refereed)
Abstract [en]

Hector Rail AB is a Swedish line haul provider for the European Rail Transport Market. On one line, Hector Rail transports large cylinder-shaped paper rolls of different sizes from Holmsund to Skövde, and compressed recycled paper shaped as cubes back to Holmsund. The wheels of their Y25 bogie wagons are experiencing surface initiated rolling contact fatigue (RCF), which is increasing the maintenance cost and sometimes interrupting the time schedule. In a collaboration with KTH Royal Institute of Technology a study of the risk of developing RCF cracks when comparing different track qualities, load cases, speeds, curves and wheel-rail friction coefficients as well as the consideration of wear is carried out. The results show the difference in surface initiated RCF when applying the different input parameters, including the location along the track where the wheels are likely to initiate RCF, as well as the location of RCF on the wheels. The model also provides the curve cases where the wheels are most likely to initiate RCF. This tool can be used for optimising and further streamlining the operation for freight traffic on any line with respect to wheel damages and planned maintenance.

National Category
Vehicle Engineering
Research subject
Järnvägsgruppen - Fordonsteknik
Identifiers
urn:nbn:se:kth:diva-213732 (URN)
Conference
11th International Heavy Haul Association Conference IHHA, 2-6 September, 2017
Note

QC 20171010

Available from: 2017-09-06 Created: 2017-09-06 Last updated: 2017-10-10Bibliographically approved
Hossein Nia, S. (2017). On Heavy-Haul Wheel Damages using Vehicle Dynamics Simulation. (Doctoral dissertation). KTH Royal Institute of Technology
Open this publication in new window or tab >>On Heavy-Haul Wheel Damages using Vehicle Dynamics Simulation
2017 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Maintenance cost is one of the important issues in railway heavy-haul operations. In most of the cases, these costs are majorly referring to reprofiling and changing the wheels of the locomotives and the wagons. The main reason of the wheel damages is usually severe wear and/or surface initiated rolling contact fatigue (RCF).This work tries to enhance and improve the knowledge of the wheel wear and RCF prediction models using dynamic simulations. While most of the contents of this study can be generalised to other operational networks, this study is focused on the locomotives and wagons of the Swedish iron-ore company LKAB. The trains are operating on the approximately 500 km long IORE line from Luleå to Narvik in the north of Sweden and Norway respectively.Firstly, a literature survey of dynamic modelling of the wagons with various three-piece bogie types is presented. Then, with concentrating on the standard three-piece bogies, parameter studies are carried out to find out what the most important reasons of wheel damages are. Moreover, the long-term stability of wheel profiles of the IORE wagons is analysed. This is done by visualising the wear and RCF evolution on the wheel profiles over 150,000km of simulated running distance.Most of the calculations for the wagons are repeated for the locomotives. However, traction and braking are also considered in the simulation model and their effects on wheel damages are briefly studied. To improve the accuracy of the wheel damage analysis, a newly developed algorithm called FaStrip is used to solve the tangential contact problem instead of FASTSIM. The damage prediction model developed in the thesis is used to study the effects of increasing axle load, correcting the track gauge, limiting the electro-dynamic braking and using a harder wheel material on the wheel life. Furthermore, a new method is developed to predict the running distance between two consecutive reprofilings due to severe surface initiated fatigue. The method is based on shakedown analysis and laboratory tests.Most of the research works in wear calculation are limited to two approaches known as wear number and Archard methods. The correlation between these two methods is studied. The possibility of using the relation between the two methods for the wear calculation process is investigated mainly to reduce the calculation time for wheel profile optimisation models.

Place, publisher, year, edition, pages
KTH Royal Institute of Technology, 2017. p. 93
Series
TRITA-AVE, ISSN 1651-7660
Keywords
wear, RCF, rolling contact, traction, braking, heavy-haul, FASTSIM, FaStrip
National Category
Engineering and Technology
Research subject
Vehicle and Maritime Engineering
Identifiers
urn:nbn:se:kth:diva-220344 (URN)978-91-7729-655-3 (ISBN)
Public defence
2018-02-06, F3, Lindstedtsvägen 26, Stockholm, 13:00 (English)
Opponent
Supervisors
Note

QC 20171219

Available from: 2017-12-19 Created: 2017-12-18 Last updated: 2017-12-21Bibliographically approved
Casanueva, C., Dirks, B., Enblom, R., Hossein Nia, S. & Shazamanian Shichani, M. (2016). Integrated simulation of damage: efficient contact modeling, wear-RCF interaction, and long-term evolution. In: ICRI Workshop on Wear and RCF: . Paper presented at ICRI Workshop on Wear and RCF.
Open this publication in new window or tab >>Integrated simulation of damage: efficient contact modeling, wear-RCF interaction, and long-term evolution
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2016 (English)In: ICRI Workshop on Wear and RCF, 2016Conference paper, Oral presentation with published abstract (Other academic)
Keywords
RCF, wear, rail, wheel, maintenance, modelling, train, railway
National Category
Reliability and Maintenance Mechanical Engineering Vehicle Engineering
Research subject
Järnvägsgruppen - Fordonsteknik
Identifiers
urn:nbn:se:kth:diva-190893 (URN)
External cooperation:
Conference
ICRI Workshop on Wear and RCF
Note

QC 20160829

Available from: 2016-08-18 Created: 2016-08-18 Last updated: 2016-08-29Bibliographically approved
Hossein Nia, S., Casanueva, C. & Stichel, S. (2015). Fast Wear Calculation for Wheel Profile Optimization. In: 10th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, Colorado Springs, August 30 - September 3, ​2015: . Paper presented at 10th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems. 10th Contact Mechanics Conference
Open this publication in new window or tab >>Fast Wear Calculation for Wheel Profile Optimization
2015 (English)In: 10th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, Colorado Springs, August 30 - September 3, ​2015, 10th Contact Mechanics Conference , 2015Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
10th Contact Mechanics Conference, 2015
Keywords
wear, prediction, Archard, wear number, simulation, energy dissipation, wheel profile, uniform wear, locomotive, optimization
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear) Applied Mechanics Mechanical Engineering
Research subject
Järnvägsgruppen - Fordonsteknik; Järnvägsgruppen - Effektiva tågsystem för godstrafik
Identifiers
urn:nbn:se:kth:diva-183277 (URN)2-s2.0-84963621663 (Scopus ID)
Conference
10th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems
Note

QC 20160407

Available from: 2016-03-04 Created: 2016-03-04 Last updated: 2018-01-10Bibliographically approved
Hossein Nia, S., Stichel, S. & Casanueva, C. (2015). Prediction of RCF and Wear Evolution of Iron-Ore Locomotive wheels. Wear, 338-339, 62-72
Open this publication in new window or tab >>Prediction of RCF and Wear Evolution of Iron-Ore Locomotive wheels
2015 (English)In: Wear, ISSN 0043-1648, E-ISSN 1873-2577, Vol. 338-339, p. 62-72Article in journal (Refereed) Published
Abstract [en]

Locomotives for the iron ore line in northern Sweden and Norway have a short wheel life. The average running distance between two consecutive wheel turnings is around 40,000 km which makes the total life of a wheel around 400,000 km. The main reason of the short wheel life is the severe rolling contact fatigue (RCF). The train operator (LKAB) has decided to change the wheel profiles to get a better match with the rail shapes in order to decrease the creep forces leading to RCF. Two wheel profiles optimised via a genetic algorithm were proposed. They have, however, not been analysed for long term wear development. There is a risk that the optimised profiles might wear in an unfavourable way and after a while cause even higher RCF or wear than the original one. This study predicts wheel profile evolution using the uniform wear prediction tool based on Archard’s wear law. RCF evolution on the surface of the wheel profiles is also investigated. The impact of wear on polishing the wheel surface and avoiding the RCF cracks to propagate is considered via introducing a correction factor to the calculated RCF index. Traction and braking are also considered in the dynamic simulation model, where a PID control system keeps the speed of the vehicle constant by applying a torque on the loco wheels. The locomotives are also equipped with a flange lubrication system, therefore the calculations are performed both for lubricated and non-lubricated wheels. The simulation results for the wheel profiles currently in use, which are performed to validate the model and the simulation procedure, show a good agreement with the measurements. It is also concluded that the lubrication system partly does not perform as expected. Comparison between the proposed optimised profiles for their long term behaviour suggests that one of them produces less RCF and wear compared to the other one.

Place, publisher, year, edition, pages
Elsevier, 2015
Keywords
RCF, Wear, Heavy haul, Traction, Braking, Lubrication
National Category
Applied Mechanics
Research subject
Järnvägsgruppen - Fordonsteknik
Identifiers
urn:nbn:se:kth:diva-169524 (URN)10.1016/j.wear.2015.05.015 (DOI)000362139200008 ()2-s2.0-84931271282 (Scopus ID)
Note

QC 20150622

Available from: 2015-06-16 Created: 2015-06-16 Last updated: 2018-03-06Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-6346-6620

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