Heave Compensator를 고려한 파랑 중 해상 크레인 설치작업 수치해석Numerical Analysis of Offshore Installation Using a Floating Crane with Heave Compensator in Waves
- Other Titles
- Numerical Analysis of Offshore Installation Using a Floating Crane with Heave Compensator in Waves
- Authors
- 남보우; 홍사영; 김종욱; 이동엽
- Issue Date
- 29-2월-2012
- Publisher
- 한국해양공학회
- Keywords
- Floating crane; Heave compensator; Wave-induced motion; tension; Lowering simulation
- Citation
- 한국해양공학회지, v.26, no.1, pp 70 - 77
- Pages
- 8
- Journal Title
- 한국해양공학회지
- Volume
- 26
- Number
- 1
- Start Page
- 70
- End Page
- 77
- URI
- https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/7957
- ISSN
- 1225-0767
2287-6715
- Abstract
- In this study, a numerical analysis of offshore installation using a floating crane with heave
compensator is carried out in time domain. The motion analysis of crane vessels is based on
floating body dynamics using convolution integral and the crane wire is treated as simple spring.
Lifted structure is assumed as a rigid body with 3 degree-of-freedom translational motion. Heave
compensator is numerically modelled by the generalized spring-damper system. Firstly, forced
motion simulations of crane wire system are carried out to figure out the basic principle of heave
compensator. The transfer function of crane wire system is obtained and effective wave period of
heave compensator are found. Then, coupled analysis of crane vessel, crane wire, and lifted
structure are performed in regular and irregular sea conditions. Two different crane vessels and
two lifted structures (suction pile and manifold) are considered in this study. Through a series
of numerical calculations, the effective zone of heave compensator is investigated with respect to
wave period and crane wire length. and the crane wire is treated as simple spring.
Lifted structure is assumed as a rigid body with 3 degree-of-freedom translational motion. Heave
compensator is numerically modelled by the generalized spring-damper system. Firstly, forced
motion simulations of crane wire system are carried out to figure out the basic principle of heave
compensator. The transfer function of crane wire system is obtained and effective wave period of
heave compensator are found. Then, coupled analysis of crane vessel, crane wire, and lifted
structure are performed in regular and irregular sea conditions. Two different crane vessels and
two lifted structures (suction pile and manifold) are considered in this study. Through a series
of numerical calculations, the effective zone of heave compensator is investigated with respect to
wave period and crane wire length.
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