PROPELLER STRESS CALCULATION USING CURVED FINITE ELEMENTS
A finite element displacement model was utilized to predict the elastic behavior of a propeller blade having an arbitrary shape and subjected to prescribed loading. Solid elements in their general form were adapted. The use of curvilinear coordinates in element space provides a practical means for defining complex design surfaces and also provides an expedient method for stress calculations. The curved three-dimensional elements fit readily to a skewed geometry of curved boundary and their application to propeller problems is simple and straight-forward. The performance of the curved solid finite elements has been found to be excellent and the computed results, because of the general nature of the solid elements are assured to converge to the true solution. The high degree of accuracy obtained from a recent analysis of a full size propeller strongly suggests that the current development represents a realistic and reliable approach to the general solution of the propeller stress problem.
- Paper presented at Propellers 75, Philadelphia, Pa., July 22-23, 1975.
Society of Naval Architects and Marine Engineers601 Pavonia Avenue
Jersey City, NJ USA 07306-2907
- Ma, J H
- Schnobrich, W C
- Stuber, C B
- Publication Date: 1975-7
- Features: References;
- Pagination: 14 p.
- TRT Terms: Blade loading; Finite element method; Mechanical loads; Propellers; Stresses
- Old TRIS Terms: Propeller loading; Propeller stresses
- Subject Areas: Marine Transportation; Vehicles and Equipment;
- Accession Number: 00099343
- Record Type: Publication
- Source Agency: Society of Naval Architects and Marine Engineers
- Report/Paper Numbers: #1
- Files: TRIS
- Created Date: Sep 30 1975 12:00AM