PREDICTION OF MARINE PROPELLER DISTORTION AND STRESSES USING A SUPERPARAMETERIC THICK-SHELL FINITE-ELEMENT MODEL

Summarizes the development of two finite element models to estimate the response of marine propellers subjected to surface pressure and centrifugal loading. The first model is represented by a mesh of co-planar thin shell elements of triangular form. Analysis of a mathematically defined propeller shows this model is unsatisfactory in the root region of a propeller blade. This aspect leads to the development of a thick shell model incorporating parabolic and cubic curved elements. These elements include the influence of shear deformation through the blade which has the effect of transforming the overall blade response from the shell model in the outer region of a blade to a cantilever beam model towards the root. Distortion and stress patterns are included for a mathematically defined propeller and these are compared with calculated and experimental results taken from work presented by Conolly. General agreement between the finite element and experimental results leads to the conclusion that the thick shell model represents a satisfactory approach for the calculation of the response of propeller blades of arbitrary form.

  • Corporate Authors:

    Royal Institution of Naval Architects

    10 Upper Belgrave Street
    ,   USA 
  • Authors:
    • Atkinson, P
  • Publication Date: 1973-11

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Filing Info

  • Accession Number: 00054039
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: May 7 1974 12:00AM