• Journal of the Korean Society of Marine Environment & Safety
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• v.26 no.6
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• pp.698-705
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• 2020

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.

• Transactions of the Korean Society of Machine Tool Engineers
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• v.16 no.3
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• pp.96-102
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• 2007

An Optimal shape design of the boom system in high ladder vehicles is performed using 3-D finite element method (FEM). Results of structural analyses providing displacements, stresses are implemented for the optimum shape design. Lanzcos algorithm is used for the modal analysis in order to find natural frequencies. The optimal shape including cross sectional thickness and length of the boom system is controlled by the subproblem method besed on displacement and Von Mises stress. It is found that a plenty of materials can be saved by using shape design optimization in high ladder vehicles. It is also found that the natural frequency is increased until 6th mode and maintained similarly or decreased after 6th mode.