차륜형 전투차량 전복 시승무원 안전성 확보를 위한 시뮬레이션 연구

이경수(Gyung-Soo Lee),정의진(Ui-Jin Jung),박경진(Gyung-Jin Park) 대한기계학회 2014 大韓機械學會論文集A Vol.38 No.4

차륜형전투차량은 보병부대의 전투력 강화와 기동성 향상을 목적으로 운용하는 군용차량이다. 전투차량은 운용 특성상 험난한 지형의 주행이 불가피하고 높은 무게 중심으로 인해 전복 사고의 위험성이 크다. 이러한 이유로 전투차량의 내부는 전복 사고에 따른 승무원의 안전성을 고려하여 설계해야 할 필요가 있다. 하지만 실제 차량을 이용한 시험은 현실적으로 많은 어려움이 있다. 따라서 본 연구에서는 차륜형전투차량의 전복 시험을 모사하여 승무원의 안전성을 측정하기 위한 컴퓨터 시뮬레이션 및 모델링 방법에 관한 연구를 수행한다. 본 논문의 연구 범위는 전투차량 전복 시험 조건, 전투차량 유한요소 모델링, 유한요소 인체 더미의 적용 방법, 전복 시험 시뮬레이션, 시뮬레이션 적용 시 발생 가능한 문제와 해결 방안 제시, 인체 상해치 계산 및 평가를 포함한다. A wheeled armored vehicle is a military vehicle that has been developed to enhance combat capabilities and mobility for the army. The wheeled armored vehicle has a high center of gravity, and it operates on unpaved and sloped roads. Therefore, this vehicle has a high risk of rollover crashes. To design the interior of the military vehicle, the crew’s safety during rollover crashes is an important factor. However, actual vehicle tests for design are extremely expensive. In this paper, nonlinear dynamic analysis is performed to simulate the rollover crashes and the passenger injury is assessed for a wheeled armored vehicle. The scope of this research is the rollover condition, FE modeling of the wheeled armored vehicle and the dummy, arrangement of dummies, assessment of passenger injuries, and simulation model for rollover crashes.

전투 차량 전복 안전성 평가 및 전복 시 승무원의 거동에 대한 연구

김호범(Hobum Kim),이경훈(Kyounghoon Lee),이강운(Kangwun Lee),김종현(Jonghyun Kim),이정엽(Jeongyub Lee),정의진(Ui-Jin Jung),박경진(Gyung-Jin Park) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11

The wheeled armored vehicle has a high center of gravity, and it operates on unpaved and sloped roads. Therefore, this vehicle has a high risk of rollover crashes. To design the interior of the military vehicle, the crew’s safety during rollover crashes is an important factor. However, there are restrictions in designing the space and the safety devices of the vehicle. In this paper, nonlinear dynamic analysis is performed to simulate the rollover crashes and the passenger injury is assessed with an existing vehicle model. Moreover, designs of a headrest and a seat belt are proposed to reduce passenger injury. The results of passenger injury are compared with a previous design. HyperWorks and LS-DYNA are used for the finite element modeling and nonlinear dynamic analysis, respectively.

차륜형 대공포 냉방장치 성능개선 연구

전기현(Ki-Hyun Jeon),이동희(Dong-Hui Lee),이부환(Boo-Hwan Lee) 대한기계학회 2013 大韓機械學會論文集B Vol.37 No.12

과거의 무기체계는 체계의 목적과 비용 등의 문제로 운용환경에 대한 관심이 부족하였으며, 특히 냉방장치가 미탑제된 체계가 많이 개발되었다. 근래 개발되는 무기체계는 고도의 정밀조준 및 고감도 시스템으로 진화함에 따라 무기체계를 효과적으로 제어하기 위하여 운용자의 운용환경도 중요한 요소로 대두되고 있다. 현재의 무기개발자들은 대부분 통합형 환경제어장치를 장착하도록 설계하고 있다. 본 연구에서는 장갑차량의 운용환경 및 설계조건을 바탕으로 한국군의 운용환경에 적합한 냉방기 및 냉방부하를 검토하고 시제품의 냉방성능 시험결과가 목표성능에 미달되어 이에 대해 개선내용 및 검토결과를 기술하였다 A combat vehicle needs to have an air-conditioning unit. Accordingly, new combat systems have tended to apply an integrated heating, cooling, and ventilating system. The air conditioning unit used depends on the combat vehicle"s purpose of use. In this study, we studied an air-conditioning unit for an armored combat vehicle as a special use and military specification and tried to improve the air-conditioning unit"s performance.

전투차량용 워터제트 구동축 파손 원인분석 연구

성수민,김선도 한국기계기술학회 2020 한국기계기술학회지 Vol.22 No.5

In this study, analyzed the cause of failure of the cardan shaft for water propulsion of an armored wheeled vehicle. During the development test(DT), the vehicle was deflected to the left on the water. As a result of the confirmation, increasing angular displacement and abrasion of SPIDER(Universal joint) occurred. As a result of a structure analysis and torsion fracture test, cause of failure is not insufficient design and strength deficit of each parts. and as a result of a simulation review of the assembly layout of each part, it was confirmed that excessive rotational vibration occurred. In order to solve this problem, improved the assembly layout of the water propulsion system and the worn SPIDER lubrication. Since there has been no occurrence of the same case between military operations so far, it has been confirmed that the improvement plan is appropriate.

장갑차량용 자가발전 냉방시스템의 최적화 설계

이부환(Boo-Hwan Lee),김영운(Young-Un Kim),윤서욱(Seo-Uk Yoon) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.10

Combat Vehicle needs to have Self-Powered Air-Conditioning Unit although new combat systems have a tendency to apply an integrated system about heating, cooling and ventilating. A Self Powered air conditioning unit has lots of advantages that keep the cooled environmental in vehicle without using the main power. In this study we studied Diesel Powered Air Conditioning Unit for Armored Combat Vehicle as a special use and military specification and tried to do a case study that applies to one of the unique military combat vehicles. By using Fluent 5.3 we tried to find proper air ducting method and its location in the armored combat vehicle. When we need to upgrade our vehicle with a small modification of previous system, we should choose to the most effective model of them which we can select. The results show that Self-Powered Air-conditioning Unit gives one of the best solutions to the previous vehicles which haven't equipped with cooling unit for their crews.

대공포 포탑의 냉방유동개선 연구

이동희(Dong Hyi Lee),황부일(Bu Il Hwang),김치환(Chi Hwan Kim) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.11

Combat vehicle needs to have air-conditioning unit although new combat systems have a tendency to apply on the integrated system about heating, cooling and ventilating. The specification of air conditioning unit depended on combat vehicle’s purpose of use. It is difficult to send cooing air from air conditioning unit to a gun turret through the drum basket. Because the gun turret is rotating and consists of closed anti-aircraft shell magazine. In this study we studied air conditioning unit for armored combat vehicle as a special use and military specification and tried to improve air-conditioning unit performance although the gun turret is rotating and could apply more improved unit for our combat vehicle due to analysis and test of this study for flow improvement compared to the previous model.

비개방형 포탑드럼바스켓을 가진 대공포체계의 냉방장치개선 연구

황부일(Boo Il Hwang),이동희(Dong Hui Lee),김치환(Chi Hwan Kim) 대한기계학회 2015 大韓機械學會論文集B Vol.39 No.1

과거의 무기체계는 체계의 목적과 비용 등의 문제로 운용환경에 대한 관심이 부족하여 특히 냉방장치가 탑재되지 않은 체계가 많이 개발되었다. 근래 개발되는 무기체계는 고도의 정밀조준 및 고감도 시스템으로 진화함에 따라 무기체계를 효과적으로 제어하기 위하여 운용자의 운용환경도 중요한 요소로 대두되고 있다. 현재의 무기개발자들은 대부분 통합형 환경제어장치를 장착하도록 설계하고 있다. 본 연구에서는 기 개발된 내부 탄통을 가진 대공포 장갑차에서, 포탑이 회전을 하더라도 효율적으로 차가운 냉기를 전달할 수 있게 하기 위해 드럼바스켓 해석 및 시험을 통해 냉방개선 방안을 도출하고 결과를 실제 장비에 적용하였다. Combat vehicles need an air-conditioning unit, although new combat systems tend to use an integrated system for heating, cooling, and ventilating. The specifications of an air-conditioning unit depend on the combat vehicle"s purpose. It is difficult to send cooling air from the air-conditioning unit to a gun turret through the drum basket because the gun turret rotates and consists of a closed anti-aircraft shell magazine. In this study, we considered an airconditioning unit for armored combat vehicle based on the special requirements and military specifications. We evaluated the performance of the air-conditioning unit despite the rotating gun turret through analysis and tests in terms of flow improvement compared to the previous model.

차륜형 전투차량의 충격흡수기 이상소음 발생에 관한 연구

김록한,강승주,오은빈,이지완 한국기계기술학회 2023 한국기계기술학회지 Vol.25 No.5

In this study, the abnormal noise phenomenon generated intermittently in the shock absorber of the combat armored vehicle was approached from the side of the squeak joint to solve the phenomenon. In order to identify the cause of the noise, the factors causing friction in the shock absorber were checked from the viewpoint of problem product analysis, process, and design. As an improvement plan, by improving the non-lubricated section in the nitrogen chamber, the operating noise was reduced to a level lower than that of a general automobile engine along with the elimination of noise. Considering that this is a combat vehicle, it is judged that it has been improved so as not to affect the survivability and health of the crew during equipment operation. Through the improvement of this study, it is expected to prevent power loss and improve the emotional quality of our soldier.

전투 시스템의 트리 구조 모델링을 통한 생존성 및 신뢰성 분석 연구

위미선(Miseon Wi),안성모(Seong mo An),엄태훈(Tae Hoon Eom),진현준(Hyeonjun Jin),김동성(Dong Seong Kim),박종서(Jong Sou Park) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.2