| 报告题名: | Optimization of offshore wind turbine support structures using analytical gradient-based method |
| 作者: | Chew, Kok Hon; Tai, Kang; Ng, E.Y.K.; Muskulus, Michael
|
| 出版者: | NTNU
|
| 出版年: | 2015
|
| 发表日期: | 2015
|
| 国家: | 挪威
|
| 语种: | 英语
|
| 英文摘要: | Design optimization of the offshore wind turbine support structure is an expensive task; due to the highly-constrained, non-convex
and non-linear nature of the design problem. This report presents an analytical gradient-based method to solve this problem in an
efficient and effective way. The design sensitivities of the objective and constraint functions are evaluated analytically while the
optimization of the structure is performed, subject to sizing, eigenfrequency, extreme load and fatigue load constraints. A case study
is carried out for the OC4 jacket substructure to evaluate the method. Results shows that an optimal jacket design with 52 percent
structural mass reduction is attained in 27 iterations, while satisfying all design constraints under the simplified load cases used.
Besides, it is shown that the analytical sensitivity analysis is more accurate and efficient than the often used finite difference
approximations. It can avoid numerical artifacts that typically occur in the analysis of extreme load constraint sensitivities. |
| URL: | https://brage.bibsys.no/xmlui/bitstream/handle/11250/2393244/Technical-Report-BAT-MB-OW-R01-2015_final.pdf?sequence=3&isAllowed=y
|
| 资源类型: | 研究报告
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/29187
|
| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
|
| File Name/ File Size |
Content Type |
Version |
Access |
License |
|
|---|
| Technical-Report-BAT-MB-OW-R01-2015_final.pdf（552KB） | 研究报告 | -- | 开放获取 | | View
Download
|
|
| Recommended Citation: | |
Chew, Kok Hon,Tai, Kang,Ng, E.Y.K.,et al. Optimization of offshore wind turbine support structures using analytical gradient-based method. 2015-01-01.
|
|
|