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다구찌법을 이용한 시트벨트 앵커리지 시험의 준정적 해석 방법 구현
김진규(Jinkyoo Kim),송명준(MyungJun Song) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_3
To ensure proper strength of seat and seatbelt anchorage systems. some regulations such as FMVSS207/210 and ECE R14 established. FEA users released several methods to simulate quasi-static phenomena of ECE R14 test using explicit codes like LS-DYNA. On this study, the features of factors which affect dynamic characteristics of LS-DYNA were examined by the aid of Orthogonal Array and Analysis of Variables (ANOVA). Ramp time and global damping coefficient are selected as factors and have three levels for each factor. ECE R14 analysis for the changed model has done with best levels of each factor and the result of the analysis shows good correlation with test result.
김진규(Jinkyoo Kim),송명준(Myungjun Song),남진영(Jinyoung Nam),이재준(Jaejun Lee),임현우(Hyunwoo Lim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Automobile seats playa crucial role of protecting passengers securing them from a car accident. And also those should provide comfort, back-and-forth movement, height adjustment, and many safety and functional parts like side airbag, seatbelt, heater, ventilation device and so on. FEA is one of powerful tools to verify seat strength with complex structures in an early stage of seat development time. To check if the seat meets requirements and safety standards like FMVSS(Federal Motor Vehicle Safety Standards) and ECE, the whole CAD model of seat structure should be prepared for the FEA. In this study, the maximum forces that seat fails at the conditions of rail section peeling test, track pulling test, seat belt anchorage test, and frontal impact sled test have been conducted and compared each other. Main deformed parts at the analysis of whole seat structure were investigated looking at the graph of internal energy of all parts. It is found that reliable relationship exists between component or sub-assembly level test and assembly level test results. The deformed shape of the parts with high internal energy was very similar to the track pulling analysis result. It is found that failure or peeling load of seat belt anchorage analysis ranges 80-85% of the one of track pulling analysis result. Seat belt anchorage test result can be predicted after the analysis of track pulling test. As a result, engineers can reduce their development time and improve their design by ensuring the meet of requirement of full seat structure in advance.
설계민감도 해석을 이용한 안전기준 별 자동차용 시트의 설계변수 결정
이재준(Jaejun Lee),김진규(Jinkyoo Kim),남진영(Jinyong Nam),임현우(Hyunwoo Lim),송명준(Myungjun Song) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The automobile seat must satisfy various safety regulations for the passenger's safety. In many design practices, each component is independently designed by concentrating on a single related regulation. However, since multiple regulations can be involved in a seat component, there may be design confliction among the various safety regulations. Therefore, a new design methodology is required to effectively design an automobile seat. Design sensitivity analysis is calculation of the rate of change of responses with respect to design variables. Designer can choose the effective design variables and get the information for direction of improved design with design sensitivity analysis. So, design sensitivity analysis is used determination of design variables of automobile seat. In addition, non-linear analysis is used determination of design variables of automobile seat by safety regulations. There was comparison between design sensitivity and non-linear analysis results.
후방 SLED 충돌시 승객안전을 위한 시트의 주요한 작용에 관한 연구
송명준(Myung-jun Song),김진규(Jinkyoo Kim),최명진(Myung-jin Choi) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_3
The crash safety of the passenger in manufacturers of cars is the most principal issues on developing new car. The manufacturers has developed the new car to have much interest on the rear impact in now Many engineers have studies that the seat give the passenger some effect in the rear crash and have some factors related in the rear impact. Therefore this paper has done to submit the result studied deformation, energy absorbent, and acceleration of the seat in the rear impact.
황수환(Suhwan Hwang),김석환(Seokhwan Kim),이광노(Kwang-Noh Lee),편종권(Jong-Kweon Pyun),김진규(Jinkyoo Kim),송명준(Myungjoon Song),양정태(Jungtae Yang),이인혁(Inhyeok Lee) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Many engineers are trying to predict seat comfort, but these predictions are very difficult. The automobile seat is composed of the foam with the frame. Lumbar support is very important part in car seat, also. Using data from a seat material property, pam-comfort program finds the factor that we will make a major parameter of seat comfort. On the basis of result knowledge of the analysis, we can evaluate the seat comfort factor and find the best way to solve it. Simulation program will be used to predict major parameter to seat comfort.