NATIONAL ACADEMY OF SCIENCES OF UKRAINE

A.N.PODGORNY INSTITUTE FOR MECHANICAL ENGINEERING PROBLEMS

Department for Reliability and Dynamic Strength

Analysing the oscillations and static strength of blading and other components of turbo machines

The complex of methods is intended for analyzing effectively the static strength and oscillations of complex-shape blades, blade packs and impellers of steam, gas and hydraulic turbines by employing an hierarchical system of mathematical models, including 3D ones. The following is taken into account: the complex geometrical shape; the affect of force and temperature fields; material heterogeneity; and design and operational factors (erosion, damages, system mistuning, etc.). It is possible to design system of the rotor- blading type, and assemblies of the stator-casing type in hydraulic machines.

Displacement and stress fields during vibration

Water wheel

Compressor blade with crack

Two-blade pack

GTE rotor

The methods are used at turbine machine building enterprises in Ukraine, Russia, and at the «Skoda-Energo» Ltd. company, Czech Republic.