%0 Journal Article
%T Critical speed enhancement of a Korean high
%A Chang-Sung Jeon
%A Choon-Soo Park
%A Hong-Shik Cho
%A Seog-Won Kim
%A Tae-Won Park
%J Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit
%@ 2041-3017
%D 2018
%R 10.1177/0954409716662091
%X This study describes the critical speed enhancement of the KTX-Sancheon, a Korean high-speed train, using measured wheel profiles. The wheel wear shape of the commercial high-speed train was measured according to mileage, and the relationship between conicity and mileage was investigated. The critical speed of the KTX-Sancheon power car was analyzed numerically with the measured wheel profiles. The suspension parameters were optimized to increase the critical speed of the KTX-Sancheon. As a result, the critical speed of the power car increased by 34.1% compared to its initial condition. The results are being used for a new design of the power bogie
%K Critical speed
%K high-speed train
%K KTX-Sancheon
%K optimization
%K suspension
%U https://journals.sagepub.com/doi/full/10.1177/0954409716662091