Journal of the Korea Convergence Society (한국융합학회논문지)

Korea Convergence Society (한국융합학회)
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Convergent Study by the Structural Durability Analysis of Landing Gear

랜딩기어의 구조적 내구성 해석에 의한 융합 연구

  • Oh, Bum-Suk (Division of Mechanical & Automotive Engineering, Kongju National University) ;
  • Cho, Jae-Ung (Division of Mechanical & Automotive Engineering, Kongju National University)
  • 오범석 (공주대학교 기계자동차공학부) ;
  • 조재웅 (공주대학교 기계자동차공학부)
  • Received : 2020.03.04
  • Accepted : 2020.06.20
  • Published : 2020.06.28
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Abstract

In this study, the durability was analyzed as the models with three shapes depending on the length of the landing gear. Overall, the upper part of the landing gear produced a greater amount of deformation, but the equivalent stress was shown to be high in the upper part just above the lower part. Model 3 shows that the maximum equivalent stress is more than 4 times and the maximum total deformation is more than 24 times compared to model 2. Model 3 showed that the damage could occur beyond the yield stress at the lower end. Model 2 with the upper part longer than the lower part showed the lowest equivalent stress and total deformation among the three models. Therefore, from a structural standpoint, it was shown that model 2 was the most durable at landing and model 3 was the most degraded in terms of durability. The design and analysis results of this study can be effectively applied at grasping the structural durability of landing gear. By applying the structural durability analysis of landing gear, this paper is seen as the convergence study that conforms to aesthetic design.

본 연구에서는 랜딩기어의 길이에 따른 3가지 형상을 가진 모델링으로서 내구성을 해석하였다. 전반적으로 랜딩 기어의 상부로 갈수록 변형량이 많이 발생하나 등가응력의 경우는 하부 바로 윗부분에서 응력이 많이 작용하는 것을 알 수 있었다. Model 3는 Model 2에 비하여 최대의 등가응력은 4배 이상이 나오고 최대의 전변형량은 24배이상 나타남을 알 수 있었다. Model 3는 하단부에서 항복응력을 넘어서 파손이 발생할 수 있음을 알 수 있었다. 상단부가 하단부 보다 긴 Model 2는 3가지 모델들 중 최대의 등가응력과 전변형량이 가장 적게 나타남을 알 수 있었다. 따라서 구조적인 면에서 Model 2가 착륙시에 가장 내구성이 있고 Model 3가 내구성 면에서는 가장 저하됨을 알 수 있었다. 본 연구의 설계 및 해석 결과는 실제적으로 랜딩기어의 구조적 내구성을 파악하는 데에 효율적으로 적용할 수 있다. 랜딩기어의 구조적 내구성 해석을 적용함으로서, 본 논문이 미적인 설계에 부합된 융합 연구라고 보여진다.

Keywords

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