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가상 주행 하중을 이용한 써스펜션 다축 재현 시험 연구
임재철(Jaechul Yim),한교진(Kyojin Han),민병호(Byoungho Min) 한국자동차공학회 2014 한국자동차공학회 부문종합 학술대회 Vol.2014 No.5
This study was applied virtual road load to 8ch. test which is called suspension multi axial reproduction test or half car road simulation test that can reduce vehicle development cost and test duration. Because of the limit of CAE, it was impossible to use virtual road load to 8ch. test for which local stress of individual parts is critical rather than vehicle durability test for which vehicle or wheel movement is used. Especially, it is more difficult to conduct suspension 8ch. test which is used torsion beam type rear axle. In this study, we focused to increase the reliability of 8ch. test and the correlation with other tests using new sensors which were developed to replace local stress in particular components and can be used drive file generation with high efficient and the test result was highly similar to the test which was tested with measured road load data in proving ground, and it provide the basis of application for car program under development. And also, the study can be applied and helpful to the studies for other modules or systems test method improvement which were used virtual load data.
중국 RLDA 데이터에 의한 조향계 내구 시험모드 개발
임재철(Jaechul Yim),김기훈(Gihoon Kim),김대성(Daesung Kim),정인승(Inseung Chung),임현철(HyeonCheol Lim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In order to guarantee the durability performance of vehicle steering component, the criterion for design and evaluation based on service loading condition are necessary. The criterion should describe service loading condition because it has much diverse range due to different driving area and culture. In this study, it was established durability evaluation criterion under Chinese service condition for Chinese type steering system. The loading condition including the parameters was measured from the vehicle test on Chinese public road over 8,600㎞. The measured data was used to make the durability evaluation criterion by extrapolation method based on Chinese operating profile. The block program test signal was designed to evaluate the durability of Chinese type steering system.
Local Strain Method를 이용한 Torsion Beam Rear Axle 내구시험의 Lab to Road correlation 방법 연구
임재철(Jaechul Yim),유정민(Jungmin Ryoo),신현동(Hyundong Shin),양준석(Junsuk Yang),한교진(Kyojin Han) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
Chassis parts of vehicle has been tried to be validated through a bench test in lab. Instead of a full vehicle test on road that a lot of time and costs are required of. In case of a bench test in lab., it is very important to correlate with full vehicle test result on road. Actually, reliability of a test depends on the correlation. Therefore, many engineers are making an efforts to have good correlation. Generally a simulation test is regarded as the most reliable test method. In this sense, durability of chassis system could be evaluated with 8ch Multi Axial Simulation Rig. 8ch test is the highest level test in lab. to evaluate torsion beam rear axle durability and it is capable to simulate 8-DOF. The study of purpose is to improve correlation of results between road and 8ch lab test for torsion beam rear axle using local strain on the part. It is also to improve correlation on lab test.
스티어링 기어, 크레들 및 어태치먼트 시스템의 내구 시험 방법 연구
박현정(Hyunjeong Park),임재철(Jaechul Yim),유정민(Jungmin Ryoo),양준석(Junsuk Yang),한교진(Kyojin Han) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
These days, chassis part validation has saved time and expenses by executing bench test in the lab instead of full vehicle road test. However, it shows difficulties to demonstrate all vehicle parts motion in the full vehicle simulation test due to test boundary condition. Especially, steering gear system is hard to be reproduced in the full vehicle simulation test because it is difficult to turn the steering wheel. To compensate these problems, several kinds of steering system tests are running in the lab, apart from full vehicle tests. This study is to address a method to validate steering gear, cradle, structure and attachment system laboratory durability test.
CARLOS TC를 적용한 Trailer coupling의 Multi-axial durability test 방법
강수연(Sooyeon Kang),이기(Gi Lee),임재철(Jaechul Yim),한교진(Kyojin Han) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
The trailer coupling device of passenger car has to be passed safety and durability test requirements for customer’s satisfaction. To meet the requirements, trailer coupling device test with a car is essential. Many car manufacturers perform this car test which may cause expensive improvements, time-consuming and long development times. Naturally, developing an alternative method is required and Multi-axial durability test method of Trailer coupling device by applying CARLOS TC can be a smart solution for that.