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최대 최소 주응력 관계를 활용한 Cutout Panel 구조물의 피로해석연구
신인수,박규철,문정원,홍승현,Shin, Insoo,Park, Gyucheul,Moon, Jungwon,Hong, Seunghyun 항공우주시스템공학회 2015 항공우주시스템공학회지 Vol.9 No.4
The fatigue analysis for cutout panel used for the weight reduction of aircraft has been conventionally performed through the open hole concept using the reference stress and stress concentration factor (Kt). However, in the actual structure cases, the goal of weight reduction might be less meaningful due to the conservative approach induced by the difficulties of extracting the confident reference stress from FE-Analysis in the complicated loading behavior. Therefore a new approach is proposed in order to secure the effectiveness of weight reduction and validate the confidence of the analysis results using the interaction of max-min principal stress at the critical location of open hole edge line.