• Title/Summary/Keyword: Bogie

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Evaluation of static and fatigue strength applying European standard for the bogie frame of Diesel Multiple Unit (유럽 규격을 적용한 디젤동차 대차프레임의 정적 및 피로강도 평가)

  • Kim, Woo-Jin;Song, See-Yoeb;Park, Geun-Soo;Park, Hyung-Soon
    • Proceedings of the KSR Conference
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    • 2007.11a
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    • pp.801-808
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    • 2007
  • Rotem Company has designed and manufactured bogie for Diesel Multiple Unit (DMU) according to the European standard UIC615-4, which si normally used for designing bogie frame. Because the countries located in Middle East do not have their own regulations for bogie design, most of running bogies in Middle East are designed by using European standard UIC615-4. UIC615-4 specifies the loads that bogie frame should withstand, indicates the way of material data to be used and the principles to be during verification by analysis and test. The bogie frame depends on the load conditions and magnitudes which are subjected to during service and characteristics of materials they are manufactured from. From the above reason, Rotem Company has performed Finite Element Analysis and load tests on the bogie frame according to UIC615-4. This research contains the results obtained by the analysis and the load tests. Also, this research verifies that the bogie frame has a static strength and fatigue strength. The analysis is carried out using I-DEAS 12 NX Series and specially designed test jigs and equipment are used for the load tests.

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A Study on the Curving Performance of a Scaled Bogie on a Scaled Curve Track (축소 곡선 트랙상에서의 축소 대차 곡선주행특성 연구)

  • Hur, Hyun-Moo;Park, Joon-Hyuk;You, Won-Hee;Park, Tae-Won
    • Journal of the Korean Society for Railway
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    • v.10 no.5
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    • pp.613-618
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    • 2007
  • The performance of the railway bogie is classified into the stability and the steering performance. Testing for the bogie stability is conducted on the roller rig, but testing for the bogie steering performance on test facility is very difficult, so the testing for the vehicle curving performance is conducted on the real curve track. Testing the railway bogie on the full scale test rig is desirable, but it caused many problems relating to test costs and test time. As a possible alternative to overcome these problems, a small scaled test rig is actively used in the field of bogie stability. Thus, in this paper, we have studied a scaled track to test the bogie steering performance. For this purpose, we designed the 1/5 scaled test track equivalent to radius 200 curve and confirmed the validity of the testing for the bogie steering performance on the sealed curve track through the testing using 1/5 scaled bogie.

Experimental Study on Aerodynamic Drag Characteristics by Train Bogie Shape Variation (차세대 고속열차 대차 형상에 따른 공기저항 변화에 대한 실험적 연구)

  • Kwak, Min-Ho;Lee, Yeong-Bin;Lee, Jung-Uk;Kim, Kyu-Hong;Lee, Dong-Ho;Chung, Hyoung-Seog;Jang, Young-Il;Kwon, Hyeok-Bin
    • Proceedings of the KSR Conference
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    • 2011.05a
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    • pp.14-19
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    • 2011
  • Wind tunnel tests are performed so as to investigate the aerodynamic drag characteristics of HEMU-400x, next generation Korean high speed train. The experiments of 1/20 scaled 5-car train model are done at 30, 40, 50, 60m/s with a normal bogie, a bogie cover, and a streamlined shape. The flat plate with knife edge are installed to minimize the effect of boundary layer of wind tunnel for the train model. The aerodynamic drag reduction was more by a streamlined shape than by a bogie cover from a normal bogie. Based on the experimental results, the aerodynamic drag of HEMU-400x test train(6-car) was predicted. It is prediceted that More bogie cover could reduce more aerodynamic drag of the test train in replacement of normal bogies.

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A Study on The Load Test of Bogie for Monorail-Type LRT (모노레일 형식 경량전철차량 대차 하중시험에 관한 연구)

  • Kim, Weon-Kyong;Won, Si-Tae
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.939-950
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    • 2011
  • In this study, the load test of rubber tire bogie for monorail type LRT. Bogie for rolling stock in safety operation of the vehicle as an essential core unit before applying to the vehicle safety and reliability should be tested sufficiently. Rubber tire monorail type bogie compared to the traditional bogie wheel lots of formats, the complexity of the load acting static load test, the bogie of the vehicle operation conditions by structural analysis by considering the loading conditions was evaluated by calculating. Test methods and evaluation criteria based on urban rail vehicle performance testing by applying the test were welded parts and materials for the results leading to material fatigue endurance test by applying the result of evaluating the structure has been identified as safe.

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A Experimental Study for Health Monitoring of Bogie Frame for Next Generation High-Speed Train (차세대 고속열차용 대차프레임의 건전성 모니터링을 위한 실험적 연구)

  • Ko, Jae-Ha;Kim, Sang-Soo;Choi, Sung-Hoon;Kim, Seog-Won;Chun, Heoung-Jae
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.2684-2690
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    • 2011
  • The bogie is one of the most important components in a railway vehicle. So a lot of study has been carried out for safety and reliability of the bogie frame in experimental and simulation. In this paper, Presents an experimental study on health monitoring of next generation high-speed train bogie frame. The ultimate objective of this paper is to estimate the sensor located for health monitoring of bogie. The result from this study might be used essential data in order to construct the next generation high speed train bogie frame health monitoring.

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Evaluation of Fatigue Strength for Bogie Frame of a Tilting Train (틸팅차량용 대차프레임의 피로강도 평가)

  • Park, Byung-Hwa;Kim, Nam-Po;Kim, Jung-Seok;Lee, Kang-Yong
    • Proceedings of the KSME Conference
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    • 2004.11a
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    • pp.130-135
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    • 2004
  • The fatigue strength analysis is performed for the bogie frame of Korean tilting train which is newly developed. The loading conditions imposed on the bogie frame during carbody tilting are derived in addition to the loadings based on the JIS E4207 standard. The tilting bogie frame is modeled for the finite element analysis and fatigue analysis is carried out under Goodman equation. It is concluded the bogie frame of the developed tilting train has enough structural safety.

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Experimental and Analytical Study on Fatigue Strength Evaluation for the Bogie Frame of Tilting Railway Vehicles (틸팅열차용 주행장치 프레임에 대한 피로강도평가를 위한 해석 및 시험적 연구)

  • Kim Jung-Seok;Kim Nam-Po;Ko Tae-Whan
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.30 no.1 s.244
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    • pp.97-104
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    • 2006
  • This paper has investigated the strength of the bogie frame for the Korean tilting train that is being developed in KRRI. In this study, the loading conditions imposed on the bogie frame of tilting train were derived and the static and fatigue strength of the bogie frame has been evaluated. In order to achieve these goals, finite element analysis has been performed and the stress concentration areas were investigated. Based on the analytical results, the static load tests were conducted under the nontilting load conditions and the tilting load conditions. The test results were used to evaluate the fatigue strength of the bogie frame by Goodman diagram.

A Comparision on Structure Analysis and Load Test of Driving Bogie for Electrical Multiple Unit (전동차 구동대차의 구조해석 및 하중시험 비교 고찰)

  • Kim W.K.;Yoon S.C;Kwon S.T.;Park O.J.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.06a
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    • pp.404-409
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    • 2005
  • This paper describes the result of structure analysis and load test for bogie frame. The purpose of the analysis and test is to evaluate an safety which body structure shall be considered fully sufficient rigidity so as to satisfy proper system function under maximum load. Bogie system consists of bogie frame, suspensions, wheel-sets, braking system and transmission system. Among these component, the bogie frame is most significant component subjected to the vehicle and passenger loads. The evaluation method is used the JIS E 4207 specification throughout the FEM analysis and static load test. The analysis and test results have been very safety and stable for design load conditions.

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Vibration characteristics test of two types bogie frame of a freight car on Kyeungbu line (경부선을 주행하는 두 종류의 화차 대차프레임의 진동특성시험 및 진동증가 원인파악에 관한 연구)

  • 홍재성;함영삼;백영남;오택열
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2004.10a
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    • pp.1323-1326
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    • 2004
  • A bogie frame of welded type have some problems. Some end beam has cracked. The cracks have profound influence on the safe freight service. The bogie consists of a frame, suspensions, brakes and wheel sets. Various analyses including a numerical simulation using a finite element method, a static load test, a fatigue test, and running test should be carried out to design the bogie. However cracks have been found at some end beams of the bogies mounted on the freight cars running with the high speed. The cracks of the end beam results in deterioration of the brake performance and the running safety. Numerical simulations and dynamic tests are carried out to figure out the causes of cracks in the existing bogie, and the vibrational characteristics of the improved bogie are compared with those of the conventional one. In this reports, the vibration characteristics were dealed with the most pressing matters for the solution of the end beam crack.

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The cause examination of the crack of the end beam for welding structure type bogie (용접구조형 대차 엔드빔의 균열원인 규명)

  • Hong Jai-Sung;Ham Young-Sam;Lee Dong-Hyong;Sea Jung-Won
    • Proceedings of the KSR Conference
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    • 2004.06a
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    • pp.726-731
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    • 2004
  • Bogie is the connection device between carbody and wheel in railway vehicles. It is the core part that exert a important effect on the passenger safety and running safety. Bogie largely consists of bogie frame, suspension, brake, wheel set. Static and Dynamic load have acted on it complexly. When the bogie is designed, finite element method, static load test, fatigue test, running test should be considered. Some bogie frame of high speed railway freight car have the problem. It's end beam was cracked. The crack of the end beam have a bad effect on brake system. In that case, the cars would be in danger of derailment.

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