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한국형 전술차량 크로스멤버 강도개선에 관한 연구

A Study on Cross Member Strength Improvement of Korean Light Tactical Vehicle

  • Kim, Sung-Gon (Land-system Center, Defense Agency for Technology and Quality(DTaQ)) ;
  • Kim, Sun-Jin (Land-system Center, Defense Agency for Technology and Quality(DTaQ)) ;
  • Shin, Cheol-Ho (Land-system Center, Defense Agency for Technology and Quality(DTaQ)) ;
  • Kang, Tae-Woo (Land-system Center, Defense Agency for Technology and Quality(DTaQ))
  • 투고 : 2019.08.08
  • 심사 : 2019.12.06
  • 발행 : 2019.12.31

초록

한국형 전술차량(KLTV)의 섀시는 장비 운용 특성상 경량화 설계기술을 적용한 프레임 온 바디 구조를 적용하고 있다. 군용차량은 민수차량 대비 가혹한 도로 환경에서 사용되고 있으며, 특히 경사가 가파른 산악지형에서 운용되는 경우가 많다. 이러한 장비 운용 특성으로 인해 일부 전방부대 차량에서 프레임을 구성하는 크로스멤버 용접부위에 균열이 확인되었다. 이에 본 논문에서는 균열이 발생된 부대를 포함한 다양한 운용 도로 환경 파악을 통해 노면 가혹도 분석을 실시하였다. 그 결과 일부 부대의 전술도로는 차량 개발 시 내구도 주행시험을 실시한 도로보다 약 1.6배 이상 훨씬 가혹한 조건임을 확인하였다. 또한 전술차량 프레임에 대한 설계 검토 및 고품 분석을 통해 용접부위 균열 발생 근본원인을 파악하고, 설계 및 공정개선 방안을 도출하였다. 제안된 개선안은 실차 적용을 통한 검증시험으로 효과성을 확인하였다. 아울러 내구도 주행시험에 대한 발전방향을 제시함으로써 향후 유사 차량 개발 시 참고자료로 활용할 수 있도록 하였다.

The chassis of the Korean light tactical vehicle adopts a frame-on-body structure that uses lightweight design technology in terms of equipment operating characteristics. Military vehicles are operated in much harsher conditions compared to civilian vehicles, including mountainous terrain, especially steep slopes. Due to this characteristic, frame-welded cracks were found on some military vehicles. Therefore, in this paper, road damage analysis was conducted by identifying various roads including the military unit's road. The result confirmed that the operating environment of some military units' tactical road was much harsher than the endurance road test condition. A solution was derived through defect analysis, design review, and actual vehicle driving test. This study can be used as a reference by suggesting the development direction for the durability test of a new vehicle.

키워드

참고문헌

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