Integration of multiple physical behaviours into a geometric tolerancing approach
Language
en
Communication dans un congrès avec actes
This item was published in
11th CIRP International Conference on Computer Aided Tolerancing, 2009-03-26, Annecy. 2009
English Abstract
The performance of a helicopter engine depends essentially on the performance of the high-pressureturbine, closely correlated with the rotor/stator clearance at the tip of the blades. The engine’sthermodynamic cycle causes ...Read more >
The performance of a helicopter engine depends essentially on the performance of the high-pressureturbine, closely correlated with the rotor/stator clearance at the tip of the blades. The engine’sthermodynamic cycle causes elastic or plastic strains on some of the high-pressure turbine components,causing considerable geometric variations, some of which are irreversible.In this article we propose to integrate the notion of behaviour into the evaluation of clearance in a highpressureturbine by defining the physical phenomena that are influential during certain operational phasesand more generally over the lifetime of the turbine. Modelling the variations in the geometric deviations ofthe parts and the contacts is based on deviation hulls and clearance hulls.Read less <
English Keywords
Tolerancing analysis
flexible parts
thermomechanic
behaviour
lifecycle
helicopter engine
Origin
Hal imported