Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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The Structural Strength Assesment of Lifting Lug

리프팅 러그의 구조 강도 평가

  • Heo, Nam-Hak (School of Naval Architecture & Ocean Engineering, University of Ulsan) ;
  • Lee, Joo-Sung (School of Naval Architecture & Ocean Engineering, University of Ulsan)
  • 허남학 (울산대학교 조선해양공학부) ;
  • 이주성 (울산대학교 조선해양공학부)
  • Received : 2013.08.09
  • Accepted : 2014.01.02
  • Published : 2014.02.20
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Abstract

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 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.

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References

  1. American Society of Mechanical Egineers (ASME), 2008. ASME-BTH-1; Design of Below-the-Hook Lifting Devices, ASME, USA
  2. Kim, S.I., 2006. Block Lifting Analysis to Examine the Cause of Cracking in the Hopper Top Plate. Journal of Ocean Engineering and Technology, 20(1), pp.16-19.
  3. Lee, S.J. Hwang, O.J. Oh, Y.T. Ha, S.H. Kim, Y.H. Lee, S.B. & Kim, S.H., 2012. Strength assessment of padeye hole and lug structure assessment of block lifting lug through experiments. Proceeding of the Korea Association of Ocean and Technology Societies, EXCO, Daegu, May 2012, pp.597- 606.
  4. Min, D.K. & Eum, S.M., 2011. A Study on the Optimization of Lifting Lug for Block Erection. Special Issue of the Society of Naval Architects of Korea, pp.88-89.
  5. Seo, S.K. Kim, K.R. Eum, S.S. & Seo, Y.S., 2011. Design and Strength Analysis of Lifting Lugs. Special Issue of the Society of Naval Architects of Korea, pp.51-54.
  6. V-Eng, 2013. Introduction to Abaqus. BB-Media: Korea.

Cited by

  1. Strength Assessment of T-type Lifting Lugs Considering Deformation of Blocks vol.29, pp.4, 2015, https://doi.org/10.5574/KSOE.2015.29.4.309
  2. Ultimate Strength Assessment and Design of T type Lifting Lug vol.52, pp.6, 2015, https://doi.org/10.3744/SNAK.2015.52.6.444