Natural frequency evaluation of a lightweight GFRP composite bogie frame

A glass-fiber-reinforced plastic (GFRP) composite bogie frame was designed and manufactured in this study. The lightweight GFRP bogie frame was designed to not only sustain heavy static and dynamic loads but also have a suspension function. Therefore, its dynamic characteristics are an important fac...

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Bibliographic Details
Published inInternational journal of precision engineering and manufacturing Vol. 16; no. 1; pp. 105 - 111
Main Authors Kim, Jung-Seok, Lee, Woo-Geun, Kim, Il-Kyeom, Yoon, Hyuk-Jin
Format Journal Article
LanguageEnglish
Published Springer Korean Society for Precision Engineering 2015
Subjects
Engineering
Industrial and Production Engineering
Materials Science
Bogie
Natural frequency
Composite
Modal test
Bogie frame
Subway
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Summary:A glass-fiber-reinforced plastic (GFRP) composite bogie frame was designed and manufactured in this study. The lightweight GFRP bogie frame was designed to not only sustain heavy static and dynamic loads but also have a suspension function. Therefore, its dynamic characteristics are an important factor. In this study, its natural frequency was evaluated by means of a modal test and the test results were validated using a finite element analysis. Given these experimentally obtained dynamic characteristics, the running performance of a railway vehicle equipped with the GFRP bogie frame was assessed. The first bending natural frequency of the composite bogie frame was 22.8 Hz, which corresponds to 27.7% of the steel frame. The vehicle dynamic analysis results showed that the derailment index, dynamic wheel unloading, wheel wear index, and ride comfort satisfied the design requirements.
ISSN:2234-7593
2005-4602
DOI:10.1007/s12541-015-0013-5