최대 최소 주응력 관계를 활용한 Cutout Panel 구조물의 피로해석연구 = Study on Fatigue Analysis for the Cutout Panel Structure using the Relation of Max-Min Principal Stress

다국어 초록 (Multilingual Abstract)

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.

참고문헌 (Reference)

1 Richard C. Rice, "SAE Fatigue Design Handbook" 1997

2 Walter D. Pilkey, "Peterson’s Stress Concentration Factors" wiley 1997

3 E.F Bruhn, "Analysis and Design of Flight Vehicle Structure" JACOBS 1973

4 Niu, M.C.Y., "Airframe Stress Analysis and Sizing" Hong Kong Conmilit Press Ltd 1997