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#30358 - 10/02/09 03:56 PM Modal algorithm
Jamling Offline
Member

Registered: 10/02/09
Posts: 1
Loc: Spain
Hi,

Somebody can tell me what is the name of the algorithm that utilizes CAESAR to extract the modes in a dynamic analysis.

Thanks.

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#30370 - 10/04/09 05:47 PM Re: Modal algorithm [Re: Jamling]
Richard Ay Offline
Member

Registered: 12/13/99
Posts: 6226
Loc: Houston, Texas, USA
Jacobi Iteration.
_________________________
Regards,
Richard Ay - Consultant

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#30382 - 10/05/09 08:03 AM Re: Modal algorithm [Re: Richard Ay]
Rams Offline
Member

Registered: 04/15/08
Posts: 20
Loc: Singapore
Jacobi Iteration for Static Analysis too??

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#30389 - 10/05/09 09:48 AM Re: Modal algorithm [Re: Rams]
Richard Ay Offline
Member

Registered: 12/13/99
Posts: 6226
Loc: Houston, Texas, USA
Static analysis can use either "Choleski Decomposition" or the "LDLT" methods - it depends on the characteristics of the matrix.
_________________________
Regards,
Richard Ay - Consultant

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#30549 - 10/12/09 06:58 AM Re: Modal algorithm [Re: Richard Ay]
Ohliger Offline
Member

Registered: 12/16/99
Posts: 246
Loc: Mannheim,Germany
Iterationmethod for matrixinverting example :
Jacobi method ==> convergeded slow 194 iteration
Jacobi relaxations method ==> convergede faster 42 iteration
Gauß Seidel method ==> convergeded fastet 17 iteration


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#31373 - 11/16/09 03:40 AM Re: Modal algorithm [Re: Ohliger]
Rams Offline
Member

Registered: 04/15/08
Posts: 20
Loc: Singapore
Richard Ay,

what about the converge rete for Choleski Decomposition abd LDLT Methods..

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