基于成本评价和应力分析的飞轮转子优化设计

The optimization design of the flywheel rotor based on cost evaluation and stress analysis

以飞轮转子工艺特性、结构特性、材料价格为因素,提出一种基于模糊综合评判的复合材料飞轮转子成本评价方法。基于成本评价和应力分析,以单位质量储能量(即储能密度,EPM)、单位成本储能量(EPC)、单位体积储能量(EPV)为目标,提出一种复合材料飞轮转子多目标优化设计方法。为提高较大目标值和降低较小目标值的选取概率,设计了基于正弦函数的优化目标函数,并给出了基于目标函数二次方的多目标优化表达式;为提高安全可靠性,对复合材料应力约束进行了分析,给出了飞轮转子最高转速、最大外径与应力约束极限的关系式。最后,对成本评价和多目标优化方法进行了仿真,验证了所提出方法的有效性。

It proposes a flywheel rotor cost evaluation method based on the fuzzy synthetic evaluation method and the process characteristics,the structure characteristics,and the material price.Combining the flywheel rotor cost evaluation with the stress analysis and energy per unit mass(EPM),energy per unit volume(EPV),energy per unit cost(EPC),it illustrates a multi-optimization design method for a hybrid composite flywheel rotor.To increase the selection probability of bigger objective functions based on the sinusoidal function,the optimization formulation is deduced.Based on the stress analysis of composite material,it takes the circumferential and radial stresses to build the optimization formulation.The simulation example certifies that the optimization method is effective.