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

The Korean Society of Marine Environment and safety (해양환경안전학회)
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Development of the Vertical Ladder using a High-Strength Aluminium Alloys (6082-T6)

고강도 알루미늄 합금을 적용한 수직 사다리 개발 연구

  • Received : 2020.04.16
  • Accepted : 2020.10.28
  • Published : 2020.10.31
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Abstract

In this study, an improved aluminum alloy (6082-T6) was used to develop a unique model of an aluminum ladder for usage in offshore plant. The structural strength design was carried out in accordance with international standards such as ISO, NORSOK Austria Standard. Load combination was performed to satisfy all conditions. The structural safety of the designed model was verified using SACS, an analysis program for offshore plants based on the Finite elements method. The analysis results confirmed that both stress and deflection were satisfied within the acceptance criteria. The developed model can be applied used in various fields in the near future as it meets all the necessary criteria and is lightweight and has improved productivity.

본 논문에서는 해양플랜트에 주로 사용되는 알루미늄 사다리의 독자 모델을 개발하기 위하여, 개량형 알루미늄 합금(6082-T6)을 적용하고 국제 기준에 부합한 구조강도 설계를 하였다. 국제기준은 ISO, NORSOK, Austria Standard를 참고하였으며, 모든 조건이 만족할 수 있도록 하중 조합을 하였다. 설계된 모델은 유한요소법 [Finite elements method]을 근간으로 하는 해양플랜트 전용 해석프로그램인 SACS를 사용하여 구조 안전성을 검증하여 응력 및 처짐이 모두 허용기준 이내에 만족함을 확인하였다. 개발모델은 모든 허용기준을 만족하면서도 가볍고, 생산성이 향상되어 향후 많은 분야에서 사용이 될 것으로 기대해본다.

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References

  1. AISC(2005), American Institute of Steel Construction, Specification for Structural Steel Buildings, Chapter B-H, pp. 10-76.
  2. API(2014), American Petroleum Institute, API Recommended Practice 2A-WSD, Planning, Designing and Constructing Fixed Offshore Platforms-Working Stress Design, Chapter 4-7, pp. 5-86.
  3. ASTM E8/E8M Standard Test Method(2008), Tension test of metallic materials, pp. 1-28.
  4. Bouzid, A. H.(2014), Failure Analysis of an Aluminium Extension Portable Ladder, Materials Sciences and Applications, Vol. 5, pp. 674-684. https://doi.org/10.4236/msa.2014.59069
  5. Budianto, M., T. Wahyudi, U. Dinata, Ruddianto, and M. M. Eko P0(2017), Strength Analysis on Ship Ladder Using Finite Element Method, The 2nd International Joint Conference on Science and Technology, Vol. 953, pp. 10-16.
  6. Contractor, A. R., G. P. Rathod, and T. M. Patel(2015), Design and Analysis of Ladder Frame Chassis considering Support at contact Region of Leaf Spring and Chassis Frame, Journal of Mechanical and Civil Engineering, Vol. 12, No. 2, pp. 63-71.
  7. DNVGL offshore standrard(2015), Structural design of offshore units-WSD method, Sec. 8 Weld connections, Chapter 3.6, pp. 70-71.
  8. EN ISO 14122-4(2004), Safety of machinery - Permanent means of access to machinery, Part 4-Fixed ladders, pp. 15-33.
  9. Hossain, M. F., K. M. Shorowordi, and M. S. Islam(2018), Finite Element Analysis of an Aluminium Alloy Using Progressive Failure Algorithm, 4th International Conference on Structure, Processing and Properties of Materials, SPPM 2018, Vol. 438, pp. 1-8.
  10. NORSOK(2004), Design of steel structures, Rev.02, Chapter 7, pp. 45-46.
  11. Park, J. S. and J. K. Seo(2017), Deformation-Based Design Method of Aluminium Helideck for Eurocode 9, Journal of Applied Mechanical Engineering, Vol. 6, Issue 2, pp. 1-8.
  12. Park, S. H.(2003), Research project-Development of High Strength Aluminium Casting Alloys, Civil and Military Technology Business, pp. 15-110.
  13. SACS V.11.3(2018), Introduction of linear and nonlinear analysis and it's application of shell modeling, Vol. 2, pp. 50-65.
  14. Singh, A., V. Soni, and A. Singh(2008), Structural Analysis of Ladder Chassis for Higher Strength, International Journal of Emerging Technology and Advanced Engineering, Vol. 4, No. 2, pp. 253-259.