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장애물 회피에 페널티 보행 속도 알고리즘을 적용한 여객선 승객 탈출 시뮬레이션
박광필,하솔,조윤옥,이규열,Park, Kwang-Phil,Ha, Sol,Cho, Yoon-Ok,Lee, Kyu-Yeul 한국시뮬레이션학회 2010 한국시뮬레이션학회 논문지 Vol.19 No.4
In this paper, advanced evacuation analysis simulation on a passenger ship is performed. Velocity based model has been implemented and used to calculate the movement of the individual passengers under the evacuation situation. The age and gender of each passenger are considered as the factors of walking speed. Flocking algorithm is applied for the passenger's group behavior. Penalty walking velocity is introduced to avoid collision between the passengers and obstacles, and to prevent the position overlap among passengers. Application of flocking algorithm and penalty walking velocity to evacuation simulation is verified through implementation of the 11 test problems in IMO (International Maritime Organization) MSC (Maritime Safety Committee) Circulation 1238.
산업부산물을 활용한 태양광 에너지저장장치 화재진화 기술 기초연구
박광필 ( Park Kwang-pil ),박광진 ( Park Kwang-jin ) 한국구조물진단유지관리공학회 2023 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.27 No.1
4차산업의 발전과 에너지사용에 대한 다양성으로 인하여 전기에너지의 사용이 급증하고 있으며, 그 사용 방법에 있어서도 다양한 방법이 제안하되고 있는 실정이다. 특히, 최근 전기자동차, 데이터센터 등과 같이 이동중 에너지를 필요하거나 에너지의 공급에 문제가 발생하지 않게 하기 위하여 에너지저장장치(ESS)의 사용이 급증하고 있다. 그러나 이러한 에너지저장장치의 화재로 인한 문제가 사회적 이슈로 야기되면서 화재 진화에 대한 기술이 부족하여 이에 대한 관심이 급증하고있는 실정이다. 이러한 화재원인에 대응하면서 화재 진화 효과를 낼 수 있는 것은 열의 이동과 지속적인 진화 효과를 내야 한다. 이에 무기계 산업부산물과 화학혼화재료를 활용하여 이를 진화 할 수 있는 재료 개발을 위한 기초 연구를 실시하고자 한다.
해상 크레인 탄성 붐 적용을 위한 3D 빔(beam) 유한 요소 정식화 및 자동화
박광필(Kwang-Phil Park),차주환(Ju-Hwan Cha),이규열(Kyu-Yeul Lee),함승호 (사)한국CDE학회 2010 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2010 No.1
In this paper, in order to analyse the dynamic response of a floating crane and a cargo, the boom of the floating crane is considered as a 3 dimensional elastic beam. The boom is divided into more than 2 elements based on finite element formulation and the deformation of each element is expressed in term of shape matrix and nodal coordinates. The equation of motion for the elastic boom is consists of mass matrix, stiffness matrix and quadratic velocity vector which contains the gyroscopic and Coriolis force. Since as the number of element increase, the size and complicity of those matrices are also increase, it is not practically possible to derive the equation of motion for each number of element. To overcome the difficulty, each matrix for one element is expressed by some elementary matrices which are given for 3 dimensional beam. Especially the quadratic velocity vector is derived as a multiplication of shape matrix and 3 dimensional rotation matrix. By using the derived matrices, the equation of motion for multi element boom is automatically constructed. A simulation system is implemented for the dynamic analysis of the floating crane and the cargo. The simulation results with the elastic boon of various number of elements are presented.
평면상 승객의 회전 자세를 고려한 가속도 기반의 승객 탈출 분석 시뮬레이션
박광필(Kwang-Phil Park),조윤옥(Yoon-Ok Cho),하솔(Sol Ha),이규열(Kyu-Yeul Lee) (사)한국CDE학회 2010 한국CDE학회 논문집 Vol.15 No.4
In this paper, an acceleration based passenger evacuation simulation is performed. In order to describe a passenger’s behavior in an evacuation situation, a passenger is modeled as a rigid body which translates in the horizontal plane and rotates along the vertical axis. The position and rotation angle of a passenger are calculated by solving the dynamic equations of motions at each time step. The destination force, the contact force, and the group force are considered as external forces and the moments due to each force are also considered. With the passenger model proposed in this paper, the test problems in International Maritime Organization, Maritime Safety Committee/Circulation 1238(IMO MSC/Circ.1238) are implemented and the effects of passenger rotation on the evacuation time are confirmed.
박광필 ( Park Kwang Pil ),이승태 ( Lee Seung Tae ),황재남 ( Hwang Jae Nam ),하상욱 ( Ha Sang Wook ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.2
This study is to analyze the causes of damage on additional facilities in road. In this study, lab test was performed using field core sample. The result of The compressive strength of concrete is met with the design regulations. However, the chloride content of in concrete increased up to 2cm. The microstructure and reactant analysis identified an expanding substance on the surface. However, as the time increases, the depth is expected to be deep.