|
Abstract: Based
on the analysis of uncertain factors affecting the vibration reliability
of blade, the uncertain property of the frequency zone of resonance and
the vibration parameters of blade is described by the non-probabilistic
convex models, the uncertain vibration parameters of blade is expressed
as non-probabilistic interval variables, the non-probabilistic vibration
reliability of blade is defined, the non-probabilistic reliability
assessment system and method and model of blade vibration is presented,
and is applied to the vibration reliability computing of compressor vane
and turbine blade. It is proved by the research result that the test
data needed is few and the non-probabilistic reliability is feasible and
reasonable for vibration reliability assessment of blade, especially for
those costly parts or system whose reliability data is most few such as
aero-engine.
Key words: Vibration
reliability Non-probabilistic Blade Assessment method
CLC No: V23 TB114.3
国家自然科学基金资助项目(59475024). Received 20020403, received in revised form
20020610
|