Applying the evolution topology algorithm to the VLCC's mid-section structure optimization

作者：Liu, Hong Liang; Xia, Li Jüan; Wu, Jia Meng

来源：Journal of Ship Mechanics, 2017, 21(4): 464-471.

DOI：10.3969/j.issn.1007-7294.2017.04.011

• Evolutionary structural optimization
• Evolutionary structural topologies
• Mathematical calculations
• Optimization algorithms
• Section optimizations
• Stress indices
• Structure optimization
• Very large crude oil carriers

Evolutionary structural topology optimization shows some specific features compared with other topology optimization algorithms. Which can be applied on the optimization design of the VLCC mid-section cross-brace structure. According to the element's stress index and the element weight coefficient, the objective function was established. Then, the iteration equation of the element's weight coefficient was created based on the obtained element stress. Finally, combining the FEM's balance equation the total optimization mathematical model was created. The mathematical calculation results show that the objective function depends mainly on the model's volume function. Compared with the result of the ANSYS continuous structure topology optimization, the calculation with the evolution algorithm is more simple and efficient. This method using in this paper may provide something useful to the VLCC's lightweight design.

• 出版日期2017
• 单位上海交通大学