Studying the Stress-Strain State of a Turbine Wheel Manufactured by the Casting and Additive Technologies Methods

Abstract

The emerging and developing additive technologies are promoting works devoted to design and manufacture of the gas turbine engine centrifugal wheels. Inside them, the lattice structures are positioned, there application is promising from the standpoint of saving material and reducing loads due to reduction in the centrifugal force acting on them. The paper presents results of studying the stress-strain state of a turbine centrifugal wheel for six different designs. Two wheel designs involve the use of casting as a method for obtaining the initial workpiece, where one design is the initial, and the other is improved. Four designs differ in their internal structure, namely in the presence of lattice structures of different geometries, which manufacture requires primarily application of the additive technologies. In this case, two of the four designs have the external shape of the initial wheel, and the other two have the shape of the improved one. The paper analyzes turbine wheel of a promising small-sized gas turbine engine. Based on the results analysis, it assesses the unloading effect of using the lattice structures, and demonstrates an approach to finding their optimal position inside the wheel body

The work was carried out within the framework of the Federal Project "Development of Human Capital in the Interests of Regions, Industries and Research and Development Sector" (project no. FSSS-2022-00190)

Please cite this article in English as:

Evdokimov D.V., Sangines Lezama F., Filinov E.P., et al. Studying the stress-strain state of a turbine wheel manufactured by the casting and additive technologies methods. Herald of the Bauman Moscow State Technical University, Series Mechanical Engineering, 2025, no. 3 (154), pp. 15--35 (in Russ.). EDN: NLURJB

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