The Structural Strength Assesment of Lifting Lug
리프팅 러그의 구조 강도 평가

Nam-Hak Heo, Joo-Sung Lee
2014 Journal of the Society of Naval Architects of Korea  
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License(http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Lifting lugs are frequently used in shipyard to transportate and turn over blocks. As the shipbuilding technology develops, blocks has become bigger and bigger, and block management technology
more » ... ement technology takes a more important role in shipbuilding to enhance the productivity. For the sake of economic as well as safe design of lug structure, more rigorous analysis is needed. In this study in order to investigate the strength characteristics of two type of lug, that is, D and T type lugs, non-linear strength analysis has been carried out to compare the ultimate strength characteristics of two types of lug varying in-plane and out-of-plane loading directions. Based on the present numerical analysis results, it can be drawn that T type lug is superior to D type lug from view points of ultimate strength and deformation. Keywords : D type lug(D 형 러그), Lifting(인양), Non-linear structure analysis(비선형 구조해석), T type lug(T 형 러그), Turn over(반전 작업) 10GPa로 설정하고 탄성계수(elastic modulus)와 Poisson 비 (poisson's ratio)는 러그와 셔클 핀(shackle pin)에 각각 206GPa 과 0.3으로 동일하게 적용하였고, 응력-변형율 관계는 완전 탄소
doi:10.3744/snak.2014.51.1.42 fatcat:vxmeu3mau5dj7gqgvan37fn37q