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Kangwook Lee(이강욱),Daeyul Ha(하대율),Taejung Yeo(여태정),Chanjung Kim(김찬중) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The knee bolster of cockpit module is a crucial factor determining the occupant's knee injury in the frontal crash of a vehicle. The development of knee bolster needs numerical simulation in the design stage of cockpit module but it is very difficult to meet all its performances to comply with FMVSS 208 regulation within a given vehicle development schedule. So, the evaluation of knee bolster is required to be put in an early stage to achieve its performance objective and to satisfy the whole development schedule of vehicle. In this study, the simplification of analysis model for cockpit module and crash pulse condition were investigated and validated by tests and simulation as a way to perform the analysis in much earlier design stage. It is concluded that with this simplified approach, initial design of knee bolsters of cockpit module can be achieved and also it can shorten the total development period as well.
음성 인식 및 멀티 터치를 이용한 멀티모달 유저 인터페이스
이강욱(Kangwook Lee),김상태(Sangtae Kim),윤요한(YohaanYoon),김재정(Jaejeung Kim),이동원(Dongwon Lee),이호원(Howon Lee),조동호(Dong-Ho Cho) 한국HCI학회 2011 한국HCI학회 학술대회 Vol.2011 No.1
본 논문에서는 사용자에게 보다 직관적인 시스템 조작을 제공하기 위한 음성인식 기반의 멀티 터치 유저인터페이스(VoTUI)에 대해서 기술한다. 음성과 터치 입력을 수용하는 멀티모달 인터페이스의 경우는 보통 음성인식 및 멀티 터치 인식을 위한 사용자 입력 감지부와 음성 입력 및 터치 입력의 상관관계에 따라 그 의미를 해석하는 사용자 입력 해석부로 나뉘어진다. 본 연구에서는 사용자 입력 해석부에 대한 새로운 프레임워크를 제시함으로써 사용자가 해당 시스템을 사용하기 위한 기저 학습의 필요성을 최소화시키고, 사용자가 사용할 수 있는 명령어 셋을 풍부하게 하여 기능성을 향상시킬 뿐만 아니라, 터치 인터페이스와 음성 인터페이스가 각기 지니고 있는 물리적 한계를 극복할 수 있는 유저 인터페이스에 대해 서술하였다. We propose VoTUI, a Voice over Touch User Interface; which enable the users to control computer systems more intuitively. By using voice as another input, VoTUI can not only enrich the possible command set of Touch User Interface (TUI) but also realize the users to overcome the physical limitation of TUI. We will address the detailed operating scheme of VoTUI, demonstrate several usage scenarios of VoTUI, prove its novelty and explain the further user evaluation.
CAE를 이용한 나노 임프린트 스테이지의 동적 거동해석
이강욱(Kangwook Lee),이민규(Min Gyu Lee),임홍재(Hong Jae Yim),임시형(Si Hyung-Lim),신동훈(Dong Hoon Shin),장시열(Si Youl Jang),정재일(Jae Il Jung) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
A precision nano-imprinting stage has been widely used in the fields of the nano-technology. In this study, an analysis method of a nano-imprinting stage machine using FEM and flexible multi-body kinematics and dynamics has been presented. We have developed a virtual imprinting machine to evaluate the prototype design in the early design stage. The simulation using CAE for the imprinting machine is not only to analyze static and dynamic characteristics of the machine but also to determine design parameters of the components for the imprinting machine, such as dimensions and specifications of actuators and sensors. Structural components as the upper plate, the rotator, the shaft and the translator have been modeled with finite elements to analyze flexibility effects during the precision stage motion. In this paper flexible multi-body dynamic simulation is executed to support robust design of the precision stage mechanism. In addition, we made the 4-axis stage model to compare with 3-axis stage model.
Cockpit 모듈 Knee Impact 해석을 위한 Lower-Body Impactor Model 의 적용 타당성에 관한 연구
이강욱(Kangwook Lee),김수상(Soosang Kim),여태정(Taejung Yeo) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
One of the functions of cockpit module is to reduce the occupant's knee injury at a crash accident. Cockpit modules have knee bolster and energy absorption brackets to meet this purpose. Especially, knee protection is crucial when the crash occurs with unbelted occupant condition. In the design stage of cockpit module, the knee protection performance needs to be verified by numerical simulation before real tests is performed. For doing knee impact simulation, lower-body impactor model has been used but the validation of using the impactor model was not clear because dummy upper-body and airbag are included in the real test. In this paper, the validation of lower-body impactor model was performed by multi-body occupant analysis with airbag and dummy. Finally, the knee injury by<br/> using FE model of cockpit module & lower-body model was compared to real sled test and the resulsts are discussed.<br/>
인비지블 조수석 에어백 용 Chute 구조물의 파손에 관한 시험 및 수치 해석적 연구
이강욱(Kangwook Lee),여태정(Taejung Yeo),박순조(Soonjo Park) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Invisible hard type instrument panel that is integrated with airbag door has a chute structure attached to the backside of the instrument panel. The function of this chute structure is to guide an airbag and to protect the instrument panel from the high pressure caused by airbag deployment. But it is difficult to obtain a proper design for the chute structure because the loading condition by airbag deployment is very fast and complex. In tins paper, the design procedure through experimental tests and numerical analysis was described to find the causes of fracture for several chute designs and to meet its strength requirements. And finally, some design guidelines for the chute structure were examined briefly.
CAE를 이용한 항공용 장비 장착대의 구조 안전성 해석
이강욱(Kangwook Lee),한종표(Han Jong Pyo),변진구(Byun JinKu),김원현(Wonhyun Kim),최지호(Ji-Ho Choi) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
Some aerospace equipment use the mount tray for convenience of installation or uninstallation to the aerospace vehicle. In the aerospace vehicle, the weight is the most important factor to design the vehicle. Because, it has an influence on fuel, and that go into effect at cost. So, the mount tray is required to have not only strength, stiffness but also light weight. In this study, an analysis method of mount tray using finite element model(FEM) has been presented. Using this FEM, Vibration analysis and Acceleration analysis are conducted to confirm the structural safety. Structural analysis and material study were performed on mount tray. The finite element analysis(FEA) were performed with NASTRAN and the solid models were generated with IDEAS.