• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2022년도 가을 학술논문 발표대회
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• pp.103-104
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• 2022

In Korea, the occurrence and risk of similar fires are high, so setting up fire prevention measures through fire case investigation is considered the most basic measure in securing human safety. In particular, calculation of evacuation capacity in evacuation safety design of buildings is the most important factor that directly affects evacuation safety performance. However domestic standards is not consider about occupant characteristics. also the case of domestic, it has the problem that the law is partially applied when the fire safety design of buildings. Therefore, the purpose of this study is to study the current status and related regulations of the life safety code for the application of high fire risk buildings, and to analyze the difference in evacuation time through Case Study.

• 한국재난정보학회 논문집
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• 제9권3호
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• pp.332-338
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• 2013

최근 건축물 내의 피난안전성을 확보하고자 계획 및 설계단계부터 컴퓨터 시뮬레이션을 활용한 검토와 피난평가를 수행하고 있다. 이러한 평가는 초기입력요소에 따라 결과 값이 달라지기에 무엇보다 요소별 Data구축이 중요하지만, 국내는 피난관련 실험 및 연구가 미흡해 대부분이 국외기준을 준용하고 있는 게 현실이다. 이에 본 연구는 국내 재실자 이동속도 Data 구축의 목적으로 연령별 피난이동속도실험을 수행 분석해 보았다. 먼저 국내외 피난이동속도 관련 연구를 분석했으며 국내인 134명을 상대로 피난이동속도 실험을 시행하였다. 이를 바탕으로 실험으로 도출된 이동속도 결과치와 기존의 국외 이동속도와 비교 분석하여 국내피난상황과의 검토 및 확인절차를 실시하였다. 앞으로 이렇게 도출된 실험 Data는 국내 피난안정성평가의 이동속도 관련 기초자료로 활용될 것으로 판단된다.

• 한국도로학회논문집
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• 제10권1호
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• pp.123-134
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• 2008

국내에 설치되고 있는 가드레일의 단부처리시설(end treatments)은 차량의 관통이나 전복을 유발할 수 있는 형상을 하고 있어 사고 시 탑승자가치명상을 입을 가능성이 매우 높다. 실제로 차량이 가드레일의 단부에 충돌하였을 경우, 가드레일이 차량내부를 관통하여 탑승자에게 직접적인 상해를 입히는 경우가 발생되고 있다. 본 연구에서는 미국과 유럽의 성능평가기준(performance evaluation criteria)에 근거하여 국내 실정에 적합한 단부처리시설에 관한 성능평가기준(안)을 제시하였다. 또한 외국의 설치사례 및 연구사례를 조사하여 단부처리시설의 mechanism을 파악하고 국내 도로환경 에 적합한 단부처리시설을 제안하였다. LS-DYNA 프로그램을 이용한 컴퓨터 시뮬레이션을 통해 제안된 단부처 리시설에 대한 성능을 검증한 결과 성능평가기준(안)에 모두 만족한 결과를 보였으며, 개발 단부처리시설에 대한 실물차량 충돌시험을 수행한 결과 성능평가기준(안)의 탑승자 보호성능, 단부처리시설의 거동, 충돌 후 차량의 거동을 모두 만족하였다. 국내 최초로 탑승자의 안전을 고려하여 개발된 단부처리시설이 고속도로나 국도에 설치된다면 단부충돌사고의 심각성을 감소시켜 도로의 안전성을 향상시킬 수 있을 것으로 사료된다.

• 자동차안전학회지
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• 제11권4호
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• pp.63-68
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• 2019

The Korean traffic systems for transportation vulnerable are still under development and their social life are limited even if the traffic environment systems are developed consistently. To secure his/her mobility right, it has been required to set up the particular system for the traffic welfare, for example the express and intercity bus operations for wheelchair users. The express and intercity bus development for wheelchair users based on the original bus model has been performed. This study has investigated the safety tolerance for the bus stiffness, rollover and side impact characteristics to ensure occupant safety using the finite element models. The wheelchair bus model showed the improved crashworthiness according to the partially reinforced structure and better safety tolerance for the wheelchair users.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2020년도 가을 학술논문 발표대회
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• pp.65-66
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• 2020

When evacuation safety Design of buildings, the calculation of evacuation capacity is the most important factor that it directly impact of evacuation safety performance. However domestic standards is not consider about occupant characteristics. also the case of domestic, it has the problem that the law is partially applied when the fire safety design of buildings. Therefore, in this study we anlayze the evacuation capacity standards of each countries as basic study for development the Korean Life Safety Standards

• 대한안전경영과학회지
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• 제25권4호
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• pp.95-104
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• 2023

The purpose of this study is to propose measures to increase evacuation safety by calculating the habitable time using a fire and evacuation simulation program for the Room-escape cafe currently in operation, and comparing and analyzing it with the evacuation required time. Assuming a fire due to overheating of electric heaters in use in front of the warehouse, the habitable time was calculated through fire simulation, and the occupant's evacuation time calculated through evacuation simulation according installation of safety facilities, etc. was compared and analyzed with the habitable time. In the case of escape room cafes with safety facilities installed, evacuation safety was satisfied, but in escape room cafes without safety facilities, the evacuation safety was not secure. As a result of analyzing evacuation safety for each scenario based on the ASET analyzed in the fire simulation, it was found that in scenario 1, evacuation safety was secured and everyone successfully evacuated, while in scenario 2, no one succeeded in evacuation. These results can be said to confirm that the installation of safety facilities is very important in business establishments such as escape room cafes, which become enclosed structures when games are started.

• 자동차안전학회지
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• 제11권3호
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• pp.7-12
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• 2019

AEB (Autonomous Emergency Braking system), a system in which vehicles automatically recognize forward objects or pedestrians and actively brake when forward collisions are expected, has been mandated by NHTSA (National Highway Traffic Safety Administration) and IIHS (Insurance Institute for Highway Safety) for all vehicles sell in the United States since 2022, and AEB research is also actively underway in korea. In this study, it can be confirmed that the passenger injury is reduced according to the AEB detection distance when it is assumed that the AEB is mounted in the actual event generated from KIDAS (Korea New Car Assessment Program) data through various analysis programs.

• 자동차안전학회지
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• 제7권3호
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• pp.7-13
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• 2015

Occupant protection performance in frontal crashes has been developed and assessed for mainly front seat occupants over many years, and in recent years protection of rear seat occupants has also been extensively discussed. Unlike the front seats, the rear seats are often occupied by children seated in rear-facing or forward - facing child restraint systems, or booster seats. In the ENCAP, child occupant protection assessments using 18-month-old(P1.5) and 3-year-old(P3) test dummies in the rear seat have already been changed to new type of 18-month-old (Q1.5)and 3-year-old(Q3) test dummies. In addition, ENCAP are scheduled with the development and introduction of test dummies of 6-year-old (Q6) and 10.5-year-old children(Q10) starting 2016. In KNCAP, Q6 and Q10 child dummies will be introduced in 2017 as well. Automobile manufacturers need to develop safety performance for new child dummies closely. In this paper, we focused on Q6 and Q10 child dummies sitting in child restraint system. Offset frontal crash tests were conducted using two types of test dummies, Q6 and Q10 child dummies, positioned in the rear seat. Q6 and Q10 were used to compare dummy kinematics in rear seating positions between Q6 behind the driver's seat and Q10 behind the front passenger's seat. The full vehicle sled test results of both dummies were conducted with different restraint systems. It showed that several injury and image data was collected as the result of the full vehicle sled test. Based on the results of these investigations, this paper describes which factor is most important and combination is the best performance when evaluating rear seat occupant protection for Q6 and Q10 child dummies.

• 한국자동차공학회논문집
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• 제3권1호
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• pp.33-44
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• 1995

As the occupant safety receives more attention from automobile industries. protection systems have been developed quite well. Developed protection systems must be evaluated through real tests in crash environment Since the real tests are extremely expensive. computer simulations are replaced for some prediction of the real test In the computer simulation. it is very crucial to express the real environment precisely in the modeling precess. The energy absorbing(EA) steering system has a very important rote in vehicle crashes because the occupant can hit the system directly. In this study. the EA steering system is modeled precisely. analyzed for the safely and designed by an optimization technology. First. the EA steering system is disassembled by parts and modeled by segments and joints. The segments are modeled by rigid bodies in motion and they have resistances in contact. Spring-damper elements and force-deflection curves are utilized to represent the joints. The body block test is cal lied out to validate. the modeling. When the test results are not enough for the detailed modeling. the differences between tests and simulations are minimized to calculate unknown parameters using optimization. The established model is applied to a crash simulation of a full-car model and tuned again. After the modeling is finished. components of the steering system are designed by an optimization algorithm. In the optimization process. the compound injury of a driver is defined and minimized to determine the chracteristics of the components. The second. order approximation algorithm has been adopted for the optimization.

• 대한기계학회논문집A
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• 제29권3호
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• pp.395-402
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• 2005

Recently Multidisciplinary Design Optimization Based on Independent Subspaces (MDOIS), an MDO (multidisciplinary design optimization) algorithm, has been proposed. In this research, an MDO problem is defined for design of a belt integrated seat considering crashworthiness, and MDOIS is applied to solve the problem. The crash model consists of an airbag, a belt integrated seat (BIS), an energy absorbing steering system, and a safety belt. It is found that the current design problem has two disciplines - structural nonlin- ear analysis and occupant analysis. The interdisciplinary relationship between the disciplines is identified and is addressed in the system analysis step in MDOIS. Interdisciplinary variables are belt load and stiffness of the seat, which are determined in system analysis step. The belt load is passed to the structural analysis subspace and stiffness of the seat back frame to the occupant analysis subspace. Determined design vari- ables in each subspace are passed to the system analysis step. In this way, the design process iterates until the convergence criterion is satisfied. As a result of the design, the weight of the BIS and Head Injury Crite- rion (HIC) of an occupant are reduced with specified constraints satisfied at the same time. Since the system analysis cannot be formulated in an explicit form in the current example, an optimization problem is formu - lated to solve the system analysis. The results from MDOIS are discussed.