고유진동수 제한을 갖는 골조구조의 GA 기반 최적설계 시스템
Optimal Design System of Grillage Structure under Constraint of Natural Frequency Based on Genetic Algorithm
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초록
Normal strategy of structure optimization procedure has been minimum cost or weight design. Minimum weight design satisfying an allowable stress has been used for the ship and offshore structure, but minimum cost design could be used for the case of high human cost. Natural frequency analysis and forced vibration one have been used for the strength estimation of marine structures. For the case of high precision experiment facilities in marine field, the structure has normally enough margin in allowable stress aspect and sometimes needs high natural frequency of structure to obtain very high precise experiment results. It is not easy to obtain a structure design with high natural frequency, since the natural frequency depend on the stiffness to mass ratio of the structure and increase of structural stiffness ordinary accompanies the increase of mass. It is further difficult at the grillage structure design using the profiles, because the properties of profiles are not continuous but discrete, and resource of profiles are limited at the design of grillage structure. In this paper, the grillage structure design system under the constraint of high natural frequency is introduced. The design system adopted genetic algorithm to realize optimization procedure and can be used at the design of the experimental facilities of marine field such as a towing carriage, PMM, test frame, measuring frame and rotating arm.
Abstract
Normal strategy of structure optimization procedure has been minimum cost or weight design. Minimum weight design satisfying an allowable stress has been used for the ship and offshore structure, but minimum cost design could be used for the case of high human cost. Natural frequency analysis and forced vibration one have been used for the strength estimation of marine structures. For the case of high precision experiment facilities in marine field, the structure has normally enough margin in allowable stress aspect and sometimes needs high natural frequency of structure to obtain very high precise experiment results. It is not easy to obtain a structure design with high natural frequency, since the natural frequency depend on the stiffness to mass ratio of the structure and increase of structural stiffness ordinary accompanies the increase of mass. It is further difficult at the grillage structure design using the profiles, because the properties of profiles are not continuous but discrete, and resource of profiles are limited at the design of grillage structure. In this paper, the grillage structure design system under the constraint of high natural frequency is introduced. The design system adopted genetic algorithm to realize optimization procedure and can be used at the design of the experimental facilities of marine field such as a towing carriage, PMM, test frame, measuring frame and rotating arm.
참고문헌 (10)
- 조윤식, "유전 알고리즘을 적용한 잠수함 압력선체 최적 구조설계", 대한조선학회 논문집, 54(5), pp.378~386 (2017), 대한조선학회[DOI]
- Grzywinski M., "Weight minimization of spatial trusses with genetic algorithm", Proceeding of Conference Quality Production Improvement, 1(1), pp.238~243 (2019)
- Kaveh, A., "Shape and size optimization of truss structures with frequency constraints using enhanced charged system search algorithm", Asian Journal of Civil Engineering (Building and Housing), 12(4), pp.487~509 (2011)
- 심기찬, "유전 알고리듬 및 AISC 표준 단면을 사용한 경량화 헬리데크 구조 최적설계", 한국전산구조공학회논문집, 32(6), pp.383~390 (2019), 한국전산구조공학회[DOI]
- Kim, S.C., "Optimization for inspection planning of ship structures considering corrosion effects", Journal of the Society of Naval Architects of Korea, 36(4), pp.137~146 (1999)
- Lee, J.W., "Erection process planning &scheduling using genetic algorithm", Journal of the Society of Naval Architects of Korea, 32(1), pp.9~16 (1995)
- Moon, C.H., "The shape analysis of the truss structures using the genetic algorithm", Journal of the Architectural Institute of Korea Structure & Construction, 14(5), pp.321~330 (1998)
- Na, S.S., "Minimum weight design of transverse strength member by using finite element method", Journal of the Society of Naval Architects of Korea, 22(3), pp.27~37 (1985)
- 임선빈, "트랜스포터의 공주행(空走行) 최소화를 고려한블록 운반 계획 최적화", 대한조선학회 논문집, 45(6), pp.646~655 (2008), 대한조선학회
- 지용진, "충격하중하의 탑재장비 프레임 지지구조의 탄성마운트 배치 최적화에 관한 연구", 대한조선학회 논문집, 52(4), pp.298~304 (2015), 대한조선학회