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남명훈(Myung-Hoon Nam),박강(Kang Park) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
The manufacturing industry is undergoing many changes with the advent of the 4th industrial revolution. As the manufacturing industry changes, new processes and facilities are needed and the efficiency of production must be increased by arranging them. However, it requires a lot of time and money to place the equipment in the actual process and conduct the test. Therefore, in this study, we propose a SW that deploys and calculates facilities using the Particle Swarm Optimization (PSO) algorithm. The PSO algorithm is a method in which randomly placed particles find the optimal solution to the objective function through data comparison. Each particle was defined as one batch, and the location and phase of the equipment constituting the batch were used as variables. Using the sum of the product logistics movement distance and the operator movement distance as the objective function. The optimal arrangement was derived by comparing the results of the objective function of each particle.
취약면적법과 DMEA를 활용한 지상전투차량 유공압 현가장치의 취약성 평가
남명훈(Myung Hoon Nam),박강(Kang Park),박우성(Woo Sung Park),유철(Chul Yoo) (사)한국CDE학회 2017 한국CDE학회 논문집 Vol.22 No.2
Vulnerability assesses the loss of major performance functions of GCV (Ground Combat Vehicles) when it is hit by enemy’s shell. To decide the loss of major functions, it is determined what effects are on the performance of GCV when some components of GCV are failed. M&S (Modeling and Simulation) technology is used to vulnerability assessment. The hydro-pneumatic suspension is used as a sample part. The procedures of vulnerability assessment of the hydro-pneumatic suspension are shown as follows: 1) The components of the suspension are defined, and shot lines are generated evenly around the part. 2) The penetrated components are checked by using the penetration equation. 3) The function model of the suspension is designed by using IDEF0. 4) When the failure of the critical components of the suspension happens, its effect on the function of the suspension can be estimated using DMEA (Damage Mode and Effects Analysis). 5) The diagram of FTA (Fault Tree Analysis) is designed by exploiting DMEA. 6) The damage probability of the suspension is calculated by using FTA and vulnerable area method. In this paper, SLAP (Shot Line Analysis Program) which was developed based on COVART methodology. SLAP calculates the damage probability and visualizes the vulnerable areas of the suspension.