FIELD: mechanical engineering; compressors.
SUBSTANCE: layer of composite material is applied to surface of impeller disk. Ratio of modulus of elasticity to density of said material is less than material of disk. Layer of glass plastic can be used for this purpose. Layer of composite material featuring smaller ratio is arranged in ring groove found of periphery in disk body. At elastic vibrations of impeller disk internal friction interaction effect appears in place of contact of materials. As a result, vibration energy is dissipated and vibration amplitude is reduced which contributes to resistance of impeller to cyclic loads.
EFFECT: provision of required dynamic strength characteristics at relatively high peripheral speeds of rotation.
1 dwg
