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http://dx.doi.org/10.5762/KAIS.2019.20.5.66

Durability Evaluation of Gangway Ring for the Articulated Bogie of High speed Railway Vehicle  

Kang, Gil-Hyun (Technical Division, SR Corp.)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.20, no.5, 2019 , pp. 66-72 More about this Journal
Abstract
To improve ride quality and running stability of high speed train(HST), it is important that connection between coaches adopts the articulated bogies by using a gangway ring, unlike the conventional independent bogies assembled with car bodies. Although the gangway ring should be ensured absolute safety against passenger movement between coaches during train operation, there is still a lack of quantitative durability criteria of that. Therefore, in order to improve the passenger safety of HST, it is important to study the test requirements on durability evaluation for the ring. In this study, seven mixed loading cases were derived from the triaxial loading(vertical/lateral/longitudinal) modes. The safety factor of each component is at least 2.4 or more from the results of the finite element analysis. In addition, fatigue safety was evaluated through durability analysis from the viewpoint of strain-life design. Durability tests for the gangway ring carried out a total of 10 million cycles in 4 phases load conditions. After the durability test, the defect of each component was investigated using nondestructive testing techniques.
Keywords
Articulated Bogie; Durability; Gangway Ring; Running Stability; Safety Factor;
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