http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
홍순구(Soongu Hong),박원진(Wonjin Park),이정근(Jeongkeun Lee) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Most of optimization only can treat 1 dimensional value as design variable, therefore, it is hard to deal with 2 dimensional profile data that represents force-displacement curve or moment-theta curve of component as a design variable. This paper shows new approaching methodology that enable user to deal with 2 dimensional profile as a design parameter in assembled system to find proper profile that makes simulation result corresponding to target test data. The customized tool was developed as a result of new approaching methodology for correlation, enable to substitute for real component testing process with experience based on simulation.
Invisible Knee Airbag Module Development
Soongu Hong(홍순구),Hunhee Jeong(정훈희),Byungryong Joo(조병룡) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Recently, the automotive industry has become more interested in knee injury, particularly in the application and development of knee airbag modules in vehicles to achieve a good rating during Europe New Car Assessment Program (EuroNCAP) and Insurance Institute for Highway Safety (IIHS) tests. Also, EuroNCAP and IIHS press the automotive industry to equip vehicles with knee airbag modules for occupant safety improvement in barrier tests. Therefore, an invisible knee airbag module has been independently developed through design, simulation, static deployment tests and dynamic knee impact tests. A knee airbag module development process has been established and test results that were obtained from the development process are presented. Also, some design considerations for invisible knee airbag module development are discussed in this paper.
이정근(Jeongkeun Lee),홍순구(Soongu Hong) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
CAE Analysis has been applied for design of advanced airbag; however, the optimum design has not been completed for reducing the injuries of dummy in various test conditions of new FMVSS 208. In this study, the multi-objective optimization was applied for design of airbag to reduce the injuries in three typical crash tests. It was shown that for reducing the head injuries and chest injuries, the optimization of vent diameter and tether length of airbag could be carried out very easily and quickly by the multi-objective optimization approach.
에어백 폴딩 재현 방법에 따른 비정상 착좌 해석에 대한 연구
박원석(Wonsuk Park),홍순구(Soongu Hong),박순조(Soonjo Park) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
There is an increasing pressure to reduce injuries by using airbags for out-of-position impact loading conditions. At the same time, numerical simulation requires accurate models applicable to the OOP (Out Of Position) loading cases. However, modeling folded airbags from the 3D CAD geometry is a very time consuming task. This paper investigates the effects of passenger airbag inflation characteristics in terms of airbag modeling technique. The following two tests were simulated with the airbag model. 1. Static airbag deployment in pendulum test 2. OOP Position, Low Risk Deployment test. These two tests were then compared to the simulation results. For OOP simulation, the directly folded mesh and scaling mesh airbag model showed satisfactory correlation, but the projection mesh was not suited to OOP modeling.
김성진(Seongjin Kim),홍순구(Soongu Hong),이정근(Jeongkeun Lee) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this study, an optimization process was integrated to determine the optimum design variable values related to the driver airbag shape. A finite element driver airbag was modeled using BAGGEN, one of the MADYMO ver.5.4.1 utilities. The airbag modeling process was integrated with an NCAP frontal occupant crash model. An additional translation process was also integrated to the processes for the XML-based crash model that was constructed using MADYMO ver.6. 1. iSIGHT was employed to the whole integration process parsing and the entire processes from driver airbag modeling to optimization analysis were performed automatically exchanging files between MADYMO server and iSIGHT server. The improved results compared to the base design specification were achieved from Design of Experiment(DOE) and optimization.
하버사인 충돌파형을 이용한 단순화된 더미의 두부 가속도 예측
이정근(Jeongkeun Lee),홍순구(Soongu Hong) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The vehicle-occupant impact dynamics during a crash are studied using simple mathematical model. The model yields an analytical relationship between occupant responses and physical parameters of the vehicle structure and occupant restraint system. These parametric relationships that verified by experimental crash tests of the vehicle are useful in describing the physical concepts of the impact event and predicting occupant dynamic behavior during a vehicle crash. This parametric model is applied to experimental crash tests; the predicted head acceleration corresponds to test result. It is concluded that this parametric model is useful to predict the trend of head acceleration. The limitations of the model are discussed and the design guide is represented to aid designer to improve the restraint system.<br/>