Cargo Hold Structure Optimization of Small and Medium-Sized Duplex Stainless Steel Chemical Tankers

doi:10.1007/s12204-020-2164-5

Abstract

Abstract: A mathematical model of optimization for cargo hold structure of small and medium-sized duplex stainless steel (DSS) chemical tankers based on the rule is described. The weight of DSS is defined as the objective function. The explicit formulas of the relevant rules, the explicit geometric relations formed by the structural arrangement and the implicit constraints such as layout, lines, expert experience, workmanship and so on are taken as the constraints. The design variables and the algorithm are determined by analyzing the logical relations among the factors. Besides, the efficiency of the optimum algorithm is improved by utilizing the distribution law of the optimal corrugations. Finally, the comprehensive optimization of the cargo hold DSS is accomplished by C++ programming. The weight of the optimized scheme of the example is 4.93% lower than that of the original scheme. The finite element analysis results show that the optimized scheme is satisfied with the requirements of the rules and has a good structure performance. The optimization method based on the rules and accomplished by the programming is practical for structural preliminary design.

Key words: duplex stainless steel (DSS)| chemical tanker| structure optimization| C++ programming| finite element analysis

摘要： A mathematical model of optimization for cargo hold structure of small and medium-sized duplex stainless steel (DSS) chemical tankers based on the rule is described. The weight of DSS is defined as the objective function. The explicit formulas of the relevant rules, the explicit geometric relations formed by the structural arrangement and the implicit constraints such as layout, lines, expert experience, workmanship and so on are taken as the constraints. The design variables and the algorithm are determined by analyzing the logical relations among the factors. Besides, the efficiency of the optimum algorithm is improved by utilizing the distribution law of the optimal corrugations. Finally, the comprehensive optimization of the cargo hold DSS is accomplished by C++ programming. The weight of the optimized scheme of the example is 4.93% lower than that of the original scheme. The finite element analysis results show that the optimized scheme is satisfied with the requirements of the rules and has a good structure performance. The optimization method based on the rules and accomplished by the programming is practical for structural preliminary design.

关键词: duplex stainless steel (DSS)| chemical tanker| structure optimization| C++ programming| finite element analysis

CLC Number:

U 661.4

ZHOU Min, GAO Mingze, LI Chuang, WANG Liancheng. Cargo Hold Structure Optimization of Small and Medium-Sized Duplex Stainless Steel Chemical Tankers[J]. Journal of Shanghai Jiao Tong University (Science), 2020, 25(3): 340-351.

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