Application of block Lanczos method for analysis of cyclic symmetric structures

In this study the free vibration of circumferentially periodic structures has been analysed using the block Lanczos method in a semi complex domain for extracting real natural frequencies and complex mode shapes. The influence of the number of vectors in the block and also the effect of renumbering...

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Veröffentlicht in:	International journal for numerical methods in engineering 1993-01, Vol.36 (2), p.273-285
Hauptverfasser:	Balasubramanian, P., Jagadeesh, J. G., Suhas, H. K., Ramamurti, V.
Format:	Artikel
Sprache:	eng
Schlagworte:	Algorithms Computational methods Computer applications Dynamic response Exact sciences and technology Fundamental areas of phenomenology (including applications) Iterative methods Mathematical models Physics Solid mechanics Structural and continuum mechanics Vectors Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...) Vibrations (mechanical)
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Beschreibung
Zusammenfassung:	In this study the free vibration of circumferentially periodic structures has been analysed using the block Lanczos method in a semi complex domain for extracting real natural frequencies and complex mode shapes. The influence of the number of vectors in the block and also the effect of renumbering of nodes, depending on whether they are internal, adjacent or boundary nodes, on the CPU time are studied. The efficiency of the present method is compared with the subspace iteration schemes.
ISSN:	0029-5981 1097-0207
DOI:	10.1002/nme.1620360207