Excellent lateral damping characteristics of prototypes of advanced GRP railway leaf springs in comparison with conventional steel springs

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25797000%3A_____%2F18%3AN0000052" target="_blank" >RIV/25797000:_____/18:N0000052 - isvavai.cz</a>

Result on the web

<a href="https://books.google.cz/books?id=TApmDwAAQBAJ&pg" target="_blank" >https://books.google.cz/books?id=TApmDwAAQBAJ&pg</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Excellent lateral damping characteristics of prototypes of advanced GRP railway leaf springs in comparison with conventional steel springs

Original language description

Lateral static and dynamic damping at 0.1 Hz and 4 Hz frequencies of lateral load, respectively, of different types of railway leaf springs have been evaluated under different vertical loads, corresponding to empty wagon, half- and fully loaded wagon. Results, distinct and clear, are very good basis for classification of springs from the viewpoint of lateral forces and damage to track. The evaluated lateral damping depended on type of spring, on wagon load and partially on frequency of the lateral load. The main results can be summarised as follows: - In case of empty wagon, parabolic spring had the highest, i.e. the most favourable damping, but just before GRP spring. - In case of half-loaded wagon, the order of springs evaluated in terms of damping changed, the GRP spring being the most favourable, followed by steel parabolic spring. Unlike the steel spring, damping of the GRP sprig increased with increasing lateral load frequency, which also is a favourable result. - At fully loaded wagon, when the damaging effects of lateral forces are generally the worst, any favourable properties of the steel parabolic spring disappear and its properties are similar to steel trapezoidal spring. However, damping of GRP springs reaches maximum values and is 4- and 5- times higher than that of steel parabolic and trapezoidal spring, respectively. The results definitely confirmed that composite GRP springs have a great potential from the viewpoint of track friendliness. Moreover, their properties are very self consistent in service from different reasons, an absence of corrosion being one of them. The results can be considered as one of important points promoting the use of GRP springs and use of GRP composites in suspensions in general in track, road and environmentally friendly vehicles.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

ICCS 21 21st International Conference on Composite Structures

ISBN

978-88-9385-079-7

ISSN

2421-2822

e-ISSN

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Number of pages

2

Pages from-to

69-70

Publisher name

Societa Editrice Esculapio

Place of publication

Bologna

Event location

Bologna

Event date

Sep 4, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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