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Light-weighting Methodology in Rail Vehicle Design through Introduction of Load Carrying Sandwich Panels
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Rail Vehicles. (the Center for ECO2 Vehicle Design)
2011 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Lightweight design in rail vehicles has been important for quite some time. Structures have been optimised to fulfill their purpose and cut unnecessary weight to reach allowable axle loads. Classically this is done by using steel, thin-walled structures, throughout the car body, or, alternatively, power-pressed aluminum profiles.

The use of composites and sandwich structures has, however, been somewhat limited in the railway industry, especially when considering High-Speed trains. The anticipated weight savings, and reduced complexity of this type of structure are believed to have great potential in the future. This thesis covers the development of methods for structural stiffness design of lightweight, load carrying, sandwich panels for high-speed rail vehicles. Focusis on reducing the weight of the vehicles while simplifying the construction to reduce manufacturing costs and assembly times. Significant work is put into understanding the dynamic influence this type of structure has on the car body.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology , 2011.
Series
Trita-AVE, ISSN 1651-7660 ; 2011:36
Keyword [en]
sandwich panels, rail vehicle, lightweight, optimisation, carbody
National Category
Vehicle Engineering Reliability and Maintenance Other Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-33646ISBN: 978-91-7501-002-1OAI: oai:DiVA.org:kth-33646DiVA: diva2:416836
Presentation
2011-05-31, S40, KTH, Teknikringen 8, Stockholm, 08:39 (English)
Opponent
Supervisors
Projects
Multifunctional body panels
Funder
TrenOp, Transport Research Environment with Novel Perspectives
Note
QC 20110516Available from: 2011-05-16 Created: 2011-05-13 Last updated: 2012-06-12Bibliographically approved
List of papers
1. Orthotropic models of corrugated sheets in finite element analysis
Open this publication in new window or tab >>Orthotropic models of corrugated sheets in finite element analysis
2011 (English)In: Mechanical engineering (New York, N.Y. 1919), ISSN 0025-6501Article in journal (Refereed) Published
National Category
Vehicle Engineering Reliability and Maintenance Other Materials Engineering
Research subject
Järnvägsgruppen - Fordonsteknik
Identifiers
urn:nbn:se:kth:diva-33755 (URN)10.5402/2011/979532 (DOI)
Funder
TrenOp, Transport Research Environment with Novel Perspectives
Note
QC 20110516Available from: 2011-05-16 Created: 2011-05-16 Last updated: 2013-05-21Bibliographically approved
2. Substitution of corrugated sheets in a railway vehicle's body structure by a multiple-requirement based selection process
Open this publication in new window or tab >>Substitution of corrugated sheets in a railway vehicle's body structure by a multiple-requirement based selection process
2014 (English)In: Proceedings of the Institution of mechanical engineers. Part F, journal of rail and rapid transit, ISSN 0954-4097, Vol. 228, no 2, 143-157 p.Article in journal (Refereed) Published
Abstract [en]

To simplify construction, reduce weight and improve mechanical properties, a sandwich panel substitution process is performed on corrugated sheets in the floor and roof of a rail vehicle car body. A requirement based selection is used to design the sandwich panels with the corrugated sheet mechanical characteristics as boundaries. Car body stiffness is evaluated by modal analysis. The derived panels reduce the mass of the car body by 600-700kg. Results show the varying importance of the longitudinal, transverse and shear properties of the floor and roof panels, as well as how efficient the corrugated sheets actually are.

Keyword
sandwich panels, lightweight, corrugated sheet, rail vehicle, modal analysis
National Category
Vehicle Engineering Reliability and Maintenance Other Materials Engineering
Research subject
Järnvägsgruppen - Fordonsteknik
Identifiers
urn:nbn:se:kth:diva-33757 (URN)10.1177/0954409712467139 (DOI)000330771400003 ()2-s2.0-84892577539 (ScopusID)
Funder
Vinnova
Note

QC 20140310

Available from: 2011-05-16 Created: 2011-05-16 Last updated: 2014-03-10Bibliographically approved
3. Selection of sandwich panels for the load carrying structure of high-speed rail vehicles
Open this publication in new window or tab >>Selection of sandwich panels for the load carrying structure of high-speed rail vehicles
2011 (English)Conference paper (Other academic)
Keyword
load carrying sandwich panels, rail vehicles, lightweight, Finite Element Analysis, structural optimisation
National Category
Vehicle Engineering Reliability and Maintenance Other Materials Engineering
Research subject
Järnvägsgruppen - Fordonsteknik
Identifiers
urn:nbn:se:kth:diva-33758 (URN)
Conference
16th International Conference on Composite Structures (ICCS16). Porto, Portugal. 28-30 June 2011
Funder
TrenOp, Transport Research Environment with Novel Perspectives
Note
QS 20110516Available from: 2011-05-16 Created: 2011-05-16 Last updated: 2012-03-29Bibliographically approved

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