Modal expansion algorithms in modal analysis

Lim, Adrian Soo Jin (2001). Modal expansion algorithms in modal analysis B.Sc Thesis, School of Engineering, The University of Queensland.

       
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Author Lim, Adrian Soo Jin
Thesis Title Modal expansion algorithms in modal analysis
School, Centre or Institute School of Engineering
Institution The University of Queensland
Publication date 2001
Thesis type B.Sc Thesis
Supervisor Professor Hal Gurgenci
Total pages 98
Language eng
Subjects 09 Engineering
Formatted abstract

The aim of the thesis is to examine the various mode shape expansion methods are examined identifying the importance and usefulness of these methods. It also determines how accurate the expansion methods are compared to the actual values that are calculated analytically.

A study of the concepts of modal analysis and a review of the mode shape expansion algorithms is carried out and from these methods 2 are selected. The results of the selected methods are then discussed and compared.

The 4 modal expansion methods that will be discussed are:

•        Guyan static expansion method

•        Kidder dynamic method

•        Procrustes method

•        LSQI method (Least Squares minimization techniques with Quadratic Inequalities)

The 2 modal expansion methods that are selected for comparison are:

• Guyan static expansion method

• Kidder dynamic method

MATLAB codes have been written for the 2 methods mentioned above. The results are then compared graphically with the analytical data and discussed.

Keyword Modal expansion algorithms
Modal analysis
Additional Notes * Mechanical Engineering undergraduate theses. 2001

Document type: Thesis
Collection: UQ Theses (non-RHD) - UQ staff and students only
 
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