南京航空航天大学学报（英文版）2024，Vol.41Issue(4)：488-501,14.DOI:10.16356/j.1005‑1120.2024.04.006
增材制造涡轮叶片自然频率相似行为的评估
Assessment of Similitude Behavior in Natural Frequencies of Printed Turbine Blade
摘要
Abstract
Improving structures involves comparing old and new designs on a key parameter.Calculating the percent change in performance is a method to assess.This paper proposes a cost-effective analogy by generating replicas of additive manufactured aluminum alloy(AlSi10Mg)body-centered cubic lattice(BCC)based turbine blade(T106C)with the same in poly-lactic acid(PLA)material and their comparison in the context of percent change for natural frequencies.Initially,a cavity is created inside the turbine blade(hollow blade).Natural frequencies are obtained experimentally and numerically by incorporating BCC at 50%and 80%of the cavity length into the hollow blade for both materials.The cost of manufacturing the metal blades is 90%more than that of the PLA blades.The two material blade designs show a similar percentage variation,as the first-order mode enhancs more than 5%and the second-order mode more than 4%.To observe the behavior in another material,both blades are analyzed numerically with a nickel-based U-500 material,and the same result is achieved,describing that percent change between designs can be verified using the PLA material.关键词
AlSi10Mg/聚乳酸/U-500/T106C刀片/BCC晶格结构Key words
AlSi10Mg/poly-lactic acid(PLA)/U-500/T106C blade/BCC lattice structure分类
航空航天引用本文复制引用
MUHAMMAD Usman Safdar,沈星,EIMAN B.Saheby..增材制造涡轮叶片自然频率相似行为的评估[J].南京航空航天大学学报（英文版）,2024,41(4):488-501,14.基金项目
This work was supported by the Na-tional Natural Science Foundation of China(No.12111540251). （No.12111540251）
