[ Papers ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 27, No. 6, pp.524-532

ISSN: 2508-5093 (Print) 2508-5107 (Online)

Print publication date 15 Dec 2018

Received 07 Aug 2018 Revised 26 Oct 2018 Accepted 30 Oct 2018

DOI: https://doi.org/10.7735/ksmte.2018.27.6.524

랜덤진동을 고려한 철도차량 주 변압기의 내구 특성 평가

조병진^a ; 정의철^a ; 구정서^b^{, *}

Evaluation of the Durability Characteristics of the Railway Vehicle Main Transformer Under Random Vibration

Byung Jin Cho^a ; Eui Cheol Jeong^a ; Jeong Seo Koo^b^{, *}

aDepartment of Rolling Stoke System, Seoul National University of Science and Technology 232, Gongneung-ro, Nowon-gu, Seoul 01811, Korea
bDepartment of Railway Safety Engineering, Seoul National University of Science and Technology 232, Gongneung-ro, Nowon-gu, Seoul 01811, Korea

Correspondence to: ^*Tel.: +82-2-970-6878 Fax: +82-2-978-6878 E-mail address: koojs@seoultech.ac.kr (Jeong Seo Koo).

Abstract

This study conducted finite element analysis of the railway vehicle main transformer, which is a core component of railway vehicles. The purpose of this analysis is to evaluate the structural integrity and fatigue durability of the main transformer during random vibration by applying various analysis techniques. We performed static structural and fatigue analyses by applying the technical standards of railway vehicles and the detailed contents of EN 12663-1. The results of the static analysis confirmed that the maximum equivalent stresses generated in all the load cases were satisfied within the yield strength of the material. In addition KS C IEC 61373 was applied and Miner's rule was used to calculate the fatigue life. Based on the evaluation, the total damage index was 0.4381 according to Miner's rule.

Keywords:

Main transformer, Modal analysis, EN 12663-1, Goodman diagram, KS C IEC 61373, Random vibration

Acknowledgments

이 연구논문은 서울과학기술대학교 교내연구비의 지원으로 수행되었습니다(2018).

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