Dynamic analysis of rotating fan structures by the Finite Element Method

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.).

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Civil and Mechanical Engineering

Grantor dc:publisher

University of Nevada, Las Vegas

Year

1989

Author dc:creator

• Rouas, Mohamed Said

Contributors dc:contributor

• Samaan G. Ladkany

Statement dc:rights

• IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

Language dc:language

English

Identifier

https://oasis.library.unlv.edu/rtds/41

OAI identifier oai:identifier

oai:oasis.library.unlv.edu:rtds-1040