Abstract

A lattice compressor impeller whose stiffness and strength can be adjusted freely between unfilled impeller and solid impeller is designed. After ensuring the better calculation accuracy of Asymptotic Homogenization (AH) method, the static performance of lattice impeller with different cell filling rate is analyzed by AH method. The results show that the stiffness and strength of the lattice impeller are between unfilled impeller and solid impeller. The lattice impeller has better circumferential anti distortion ability and higher working efficiency. At the same time, the smaller axial stress provides strength guarantee for the design of a higher speed compressor impeller.

摘要

设计了一种格子压缩机叶轮，其刚度和强度可以在未填充叶轮和实心叶轮之间自由调节。在保证渐近均质化（AH）方法具有较好的计算精度后，通过AH法分析了不同单元填充率的晶格叶轮的静态性能。结果表明，晶格叶轮的刚度和强度介于未填充叶轮和固体叶轮之间。格状叶轮具有更好的周向抗变形能力和较高的工作效率。同时，较小的轴向应力为高速压缩机叶轮的设计提供了强度保证。