Most gas turbine engine structures consist of thin shells with multiple junctions. The curved isoparametric shell element gives unsatisfactory results when used for very thin shells. The Semi-Loof shell element was developed especially to deal with thin shell structures with sharp corners and multiple junctions. The Semi-Loof shell program was used at P&WC for the analysis of large engine structures. Application to the analysis of an engine static structural model, for which experimental data are also available, has confirmed the efficiency of the Semi-Loof shell element in comparison with the conventional isoparametric element.

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