基于Kriging模型的快速拆装叶轮轮盘多目标优化设计  

Multi-objective Structure Optimization of a Fast Disassembling Connection Impeller Disk Based on Kriging Model

作　　者：冀春俊[1] 徐浩[1] 孙琦[1] 孙淼[1] Chun-jun Ji;Hao Xu;Qi Sun;Miao Sun(School of energy and Power Engineering,Dalian University of Technology)

机构地区：[1]大连理工大学能源与动力学院

出　　处：《风机技术》2017年第3期44-48,共5页Chinese Journal of Turbomachinery

摘　　要：为了降低叶轮安装端面变形量以及减轻叶轮质量,对快速拆装形式的叶轮轮盘结构进行多目标优化设计,使用拉丁超立方试验设计和有限元分析生成初始样本数据并构造出Kriging近似模型,运用遗传算法对近似模型进行寻优。对优化后的参数值进行工程取整并进行有限元分析得出叶轮轮盘结构设计模型,最终优化结果显示叶轮质量减小了15%,叶轮摩擦端面轴向变形量降低了29%。优化后的叶轮模型可提高拉杆螺栓连接转子结构的可靠性。In order to improve the installation reliability and reduce the weight of impeller,a multi-objective optimizationmethod was used for the fast disassembling connection impeller disk structure.The initial sampling data was obtained and aKriging model was constructed by a latin hypercube sampling design and a finite element method.A genetic algorithm wasapplied for global optimization.The optimized design parameters were obtained by a finite element analysis for the impellerwheel structure.After the optimization,the weight of impeller was decreased by15%,the axial deformation of the impellerfriction section was decreased by49%.The optimized impeller model can improve the reliability of the rod bolt whichconnects the rotor structure.

关 键 词：快速拆装叶轮 优化设计 KRIGING模型 

分 类 号：TH452[机械工程—机械制造及自动化] TK05[动力工程及工程热物理]