Award Date

1-1-1989

Degree Type

Thesis

Degree Name

Master of Science (MS)

Department

Civil and Mechanical Engineering

First Committee Member

Samaan G. Ladkany

Number of Pages

181

Abstract

The Finite Element Method is used to determine the fundamental mode shapes and frequencies of fan structures. The analysis is performed on five fan structures, having different geometries, under static conditions and under centrifugal forces at various angular velocities. The results of the analysis are correlated with experimental data. The Southwell Coefficient, which takes into account the effect of centrifugal stiffening/softening, is determined for each fan and used for the prediction of its dynamic response and critical speeds. The research led to a study of the influence of riveted spider-to-blade connections on the vibration response of propeller fans; This thesis also presents a mathematical transformation analysis and an explanation of a frontend computer program, to the finite element system GIFTS, which facilitates the procedure of analyzing the vibration response of propeller fans under static or operating conditions, by the Finite Element Method. (Abstract shortened with permission of author.).

Keywords

Analysis; Dynamic; Element; Finite; Methods; Finite Element Method; Rotating; Structures

Controlled Subject

Civil engineering; Mechanical engineering

File Format

pdf

File Size

3891.2 KB

Degree Grantor

University of Nevada, Las Vegas

Language

English

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