• asymmetry
• casing
• FEM
• radial displacements
• structural
• thermal analysis
• tip clearances
• turbine

Gas path sealing has always been a very important issue for jet engines, and in the last years the consciousness of the presence of a consistent improvement margin for turbine clearances pushed research investments in this direction.
The improvement of tip sealing affects specific fuel consumption, service time, and most of the engine performances in general. Usually the main interest in this kind of studies is addressed to the axisymetric deformation of the casings, while in the last times a new concern on asymmetry and on the possibility to assess and control its development has been growing. This work is lined on this trend of research, since it regards the assessment of the thermally generated asymmetry of turbine casings. The study makes use of the nowadays unescapable mean of the finite element analysis, implemented via specific softwares. It is particularly concerned with the very preliminary assessment of the deformation, and it takes the form of the trial of a new methodology for the analysis, with comparison with other experienced techniques. In fact, the opportunity of simplify the study and reduce the machine times by the use of essential geometries and simplified loads has been investigated.