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대형 트럭 캐빈 공기 현가장치의 유공압 모델링 및 해석
신행우(Hangwoo Shin),최규재(Gyoojae Choi),이광헌(Kwangheon Lee),고한영(Hanyoung Ko),조길준(Giljoon Cho) 한국자동차공학회 2008 한국 자동차공학회논문집 Vol.16 No.4
In this paper, a hydropneumatic modeling and analysis of a heavy truck cabin air suspension system is presented. Cabin air suspension system is a system which improves ride comfort of a heavy truck and it can reduce vibration between truck frame and cabin. The components of the system, air spring, shock absorber, leveling valve and full cabin system are mathematically modelled using AMESim software. Simulation results of components and full cabin system are compared with experimental data of components and test results of a cabin using 6 axis simulation table. It is found that the simulation results are in good agreements with test results, and the hydropneumatic model can be used well to predict dynamic characteric of heavy truck cabin air suspension system.
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신행우(Hangwoo Shin),조원용(Wonyong Cho),심기중(Kijoong Sim),최규재(Gyoojae Choi),이영춘(Youngchoon Lee),손영호(Youngho Son) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
In this study, To reduce the weight of the front axle beam for medium duty commercial vehicle, structural optimization was processed by applying design load case. Design parameters that affect the structural strength were set as thickness, width and height of upper frame. To analyze the influence of design parameters, Optimized methods were used. The final optimized design model has the higher strength than the initial design model.
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조원용(Wonyong Cho),신행우(Hangwoo Shin),최규재(Gyoojae Choi) 한국자동차공학회 2012 한국자동차공학회 지부 학술대회 논문집 Vol.2012 No.5-2
Recently, independent front suspension system for trucks are used to reduce fuel consumption and get better ride comfort. Because of heavy loads on wheels the components of the truck independent suspension system should be carefully designed. In this paper, structural and fatigue analysis of lower and upper control arms of the medium duty truck independent suspension system are carried out. It is found that the developed control arms have sufficient strength and fatigue life under design load conditions.
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심기중(Kijoong Sim),신행우(Hangwoo Shin),조원용(Wonyoung Cho),최규재(Gyoojae Choi),이영춘(Youngchoon Lee),손영호(Youngho Son),전남진(Namjin Jeon) 한국자동차공학회 2015 한국 자동차공학회논문집 Vol.23 No.4
This paper represents the structural design of the light weight axle beam for medium duty commercial vehicle using hot press. To reduce the weight of the axle, axle beam of solid type was replaced by hollow type which was made by hot press. According to the change of axle beam structure and manufacturing method, we have to investigate the structural strength and fatigue performance. To verify the axle beam performance, the structural analysis was carried out by simplified axle beam model and various design parameters that are axle beam height, thickness and width. From the analysis results, the light weight axle beam structure was founded and applied the full model analysis. This study will be used as a guidance in development of the light weight axle for medium duty commercial vehicle.
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가상시험기법을 이용한 승용차 전륜 알루미늄 서브프레임 내구설계
남진숙(Jinsuk Nam),신행우(Hangwoo Shin),최규재(Gyoojae Choi) 한국생산제조학회 2012 한국생산제조학회지 Vol.21 No.3
Durability performance evaluation of automotive components is very important and time consuming task. In this paper, to reduce vehicle component development time and cost virtual testing simulation technology is used to evaluate durability performance of a passenger car front aluminum sub-frame. Multibody dynamics based vehicle model and virtual test simulation model of a half car road simulator are validated by comparisons between rig test results and simulation results. Durability life prediction of the sub-frame is carried out using the model with road load data of proving ground which can evaluate accelerated durability life. We found that the durability performance of the sub-frame is sufficient and it can be predicted within short time compared to rig test time.
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황택주(Taekju Hwang),조규춘(Kyuchun Cho),신행우(Hangwoo Shin),심기중(Kijoong Sim),유오성(Ohsung Yu) 한국자동차공학회 2016 한국자동차공학회 지부 학술대회 논문집 Vol.2016 No.4
In this study, We are represented the several test methods of the insulated boom for aerial work platform. The static strength tests of insulated boom were used the 100kN linear actuator and evaluated the insulated boom’s structural strength. Also, strength tests was conducted the static loading conditions given by the displacement control method. To investigate the strain characteristic of insulated boom, the strain gauge was attached the four position(150, 500, 1000, 1500 mm length from the fixed end) and strain data was acquired. As a result, we could be known that insulated boom’s braking strength was the 4000 kgf and boom’s strain was the same from the tension and compression data acquired the top and bottom surface of the boom. In addition, to evaluate the validity of the CAE analysis results, test results were compared to the analysis results.
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