Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
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Ultimate Strength Prediction Formula Estimation of Aluminium Alloy Plate Girders Subjected to Patch Loading

패치로딩을 받는 알루미늄 합금 플레이트 거더의 최종강도 예측식 추정

  • Oh, Young-Cheol (Dep. of Naval Architecture & Ocean Engineering, College of Marine Technology, MMU) ;
  • Seo, Kwang-Cheol (Dep. of Naval Architecture & Ocean Engineering, College of Marine Technology, MMU) ;
  • Ko, Jae-Yong (Dep. of Naval Architecture & Ocean Engineering, College of Marine Technology, MMU)
  • 오영철 (목포해양대학교 해양공과대학 조선해양공학과) ;
  • 서광철 (목포해양대학교 해양공과대학 조선해양공학과) ;
  • 고재용 (목포해양대학교 해양공과대학 조선해양공학과)
  • Received : 2015.08.31
  • Accepted : 2015.10.27
  • Published : 2015.10.31
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Abstract

In this paper, Used on the bridge and ship, investigate the physical relationship of aluminium plate girders(A6082-T6) considering the marine environment. Plate girder will experience the patch loading such as moving load, surcharge in the product life cycle. The ultimate strength of aluminum plate girders subjected to these loads applied multiple numerical model and performed the elasto-plastic large deflection series analysis and was proposed the predicted formula for regression analysis. The predicted formula was shown by the relationship of ultimate strength and slenderness. If the slenderness is low(0-2.3), it causes a 9 % error, and If the slenderness is higher(2.3-4.0), it causes a 1-2 % error. Therefore, the propriety of proposed prediction formular was found to be assess rationally.

본 논문에서는 교량, 선박 등에 사용하고 해양환경을 고려한 알루미늄 합금(A6082-T-6) 플레이트 거더의 물리적 관계를 살펴보고자 한다. 플레이트 거더는 제품수명주기에 이동하중, 적재하중 등 같은 패치로딩을 경험하게 된다. 이 하중을 받는 알루미늄합금 플레이트 거더의 최종강도에 대해 다수 수치모형을 적용하여 탄소성 대변형 시리즈 해석을 수행하고 회귀분석을 통해 예측식을 제안하였다. 예측식은 최종강도와 세장변수의 상관관계로 나타냈으며 세장변수가 낮을 경우(0-2.3) 약 9 % 정도 오차가 발생하며 높을 경우(2.3-4.0) 약 1-2 % 정도 오차가 발생하였다. 따라서 제안 예측식 적정성은 합리적으로 평가할 수 있는 것으로 확인되었다.

Keywords

References

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