Study on Erection Block Positioning Using Genetic Algorithm

doi:2011.25.5.76

J. Ocean Eng. Technol. > Volume 25(5); 2011 > Article

J. Ocean Eng. Technol. 2011;25(5):76-81.
DOI: https://doi.org/10.5574/KSOE.2011.25.5.076

Shin Sung-Chul,Lee Jae-Chul,Kim Soo-Young

Department of Naval Architecture & Ocean Engineering Pusan National University,Department of Naval Architecture & Ocean Engineering Pusan National University,Department of Naval Architecture & Ocean Engineering Pusan National University

유전자 알고리즘을 이용한 탑재블록 위치제어에 관한 연구

신성철,이재철,김수영

부산대학교 조선해양공학과,부산대학교 조선해양공학과,부산대학교 조선해양공학과

Keywords: Accuracy management, Block positioning, Genetic algorithm, Optimization, Erection block

핵심용어: 정도관리, 블록 위치제어, 유전자 알고리즘, 최적화, 탑재 블록

Abstract

In the shipbuilding industry, accuracy management is one of the keys for strengthening competitiveness. However, ship block errors are unavoidable in the block erection stage because of the deformation of the blocks. Currently, accuracy managers decide whether or not block corrections are needed, based on measured and designed point data. They adjust the locations of hull blocks so that the blocks are aligned with other assembly blocks based upon the experience of production engineers. This paper proposes an optimization process that can adjust the locations of ship blocks during the erection stage. A genetic algorithm is used for this optimization scheme. Finally, the feasibility of the proposed method is discussed using several case studies. We found that the proposed method can find the optimized re-alignment of erection blocks, as well as improve the productivity of the erection stage.