"FEM study of a CMC shroud"
FEM study of a CMC shroud P. Del Pugliaa, N. Laneseb, G. Zonfrillo* a Department of Mechanics and Industrial Technologies, University of Florence, Italy. Nuovo Pignone - GE Oil & Gas, Florence, Italy Abstract The quest for more efficient and environment friendly gas turbines demands higher firing temperatures. The employment of Ceramic Matrix Composites (CMCs) in hot components can allow this goal to be attained. In this study, the possibility of substituting a metallic shroud with an analogous component manufactured using a CMC material is evaluated. The laminate used is composed by long fibres of alumina embedded in a mullite matrix. The study has been carried out with a thermo-mechanical finite element analysis applied to a model of the component. Stresses generally appear to be more remarkable in correspondence to the constraints, which are also the regions with the lowest temperatures. Results show that it would be possible to substitute the metallic shroud with a CMC one, if using a material with slightly better characteristics than that used in this study.