THE PREDICTION OF STRENGTH AND NATURAL FREQUENCIES OF VIBRATION OF A MODEL SUBMARINE PROPELLER SUBJECTED TO LARGE CENTRIFUGAL LOADS IN A WIND TUNNEL

Authors
  1. Stredulinsky, D.C.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
The technical communication describes the analysis of the strength and vibration characteristics of a model submarine propeller operating at rotational speeds of 10020 and 15000 rpm in air. A finite element model of a single blade and fillet was created using the preprocessor PVAST. The finite element code VAST was then used to predict the blade stresses and natural frequencies of vibration with the blade subjected to centrifugal loading only. The surface at the fillet/hub interface was assumed to be rigidly clamped during the analysis. Two analyses were performed: one using incorrect propeller geometry, and one using geometry corrected to match the design drawings of the propeller. The results for both blade geometries have been included to show how skew and rake variations affect the predicted stresses.
Report Number
DREA-TC-92-313 — Technical Communication
Date of publication
15 Jun 1992
Number of Pages
31
DSTKIM No
92-02983
CANDIS No
125465
Format(s):
Hardcopy;Originator's fiche received by DSIS

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