FPSO Riser 지지 구조의 강도설계에 대한 위상최적화 응용

• Published in: Han-guk haeyang gonghak hoeji (Online) Vol. 24; no. 1; pp. 153 - 160
• Main Authors: 송창용(Chang-Yong Song), 정준모(Joonmo Choung), 심천식(Chun-Sik Shim)
• Format: Journal Article
• Language: Korean
• Published: 한국해양공학회 2010
• Subjects: 해양공학; Strength design 강도설계; Topology optimization 위상 최적화; Floating production storage and offloading unit(FPSO) 부유식 생산 저장 하역 장치; Riser support structure 라이져 지지 구조
• ISSN: 1225-0767; 2287-6715

This paper deals with the topology optimized design of the riser support structures for floating production storage and offloading units (FPSOs) under global and local loading conditions. For a preliminary study and validation of the numerical approach, a simplified plate under static loading is first evaluated with the representative topology optimization methods, the Homogenization Design Method (HDM) and Density Method (DM) or Simple Isotropic Material with Penalization (SIMP). In the context of the corresponding riser support structures, the design problem is formulated such that structure shapes based on design domain variables are determined by minimizing the compliance subject to a mass target, considering the stress criterion. An initial design model is generated based on an actual FPSO riser support configuration. The topology optimization results present improved design performances under various loading conditions, while staying within the allowable limit of the offshore area.