Accession Number : ADP004694

Title :   Damping Properties of Steam Turbine Blades,

Corporate Author : STRESS TECHNOLOGY INC ROCHESTER NY

Personal Author(s) : Rieger,N. F.

Report Date : NOV 1984

Pagination or Media Count : 32

Abstract : Material hysteresis, attachment friction and gasdynamic effects are recognized sources of damping in turbomachinery blading. No comparison study of their relative effectiveness appears to have been made, although there are diverse opinions on this topic. This overview paper describes a series of tests which were made to examine the damping properties of several types of steam turbine blades. One objective was to determine the relative contributions from the above damping sources in these blade types. These studies were conducted in a non-rotating damping test rig which used blades mounted in corresponding real disk root attachments.

Descriptors :   *DAMPING, *STEAM TURBINE BLADES, PERFORMANCE TESTS, HYSTERESIS

Distribution Statement : APPROVED FOR PUBLIC RELEASE