A Fuzzy Satisfactory Optimization Method Based on Stress Analysis for a Hybrid Composite Flywheel

[摘要] Considering the cost evaluation and the stress analysis, a fuzzy satisfactory optimization (FSO) method has been developed for a hybrid composite flywheel. To evaluate the cost reasonable, the cost coefficients of the flywheel components are obtained through calculating the weighted sum of the scores of the material manufacturability, the structure character and the material price. To express the satisfactory degree of the energy, the cost and the mass, the satisfactory functions are proposed by using the decline function and introducing a satisfactory coefficient. To imply the different significance of the objectives, the object weight coefficients are defined. Based on the stress analysis of composite material, the circumferential and radial stresses are considered into the optimization formulation. The simulations of the FSO method with different weight coefficients and storage energy density optimization (SEDO) method of a flywheel are contrasted. The analysis results show the FSO method can satisfied different requirement of the designer, the FSO method with suitable weight coefficients can replace the SEDO method.

[发布机构] Research Institute of Energy Storage Technology and Application, Harbin Engineering University, Harbin, Heilongjiang; 150001, China^1;Department of Mechanical Engineering, University of Victoria, Victoria; BC; V8W 2Y2, Canada^2

[关键词] Cost coefficients;Hybrid composites;Optimization formulations;Optimization method;Satisfactory degree;Storage energy density;Structure character;Weight coefficients