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Structural Engineering and Mechanics   Volume 5, Number 2, March 1997, pages 137-148
DOI: https://doi.org/10.12989/sem.1997.5.2.137
 
Natural frequency error estimation for 3D brick elements
Stephen DB, Steven GP

 
Abstract     [Buy Article]
    In computing eigenvalues for a large finite element system it has been observed that the eigenvalue extractors produce eigenvectors that are in some sense more accurate than their corresponding eigenvalues. From this observation the paper uses a patch type technique based on the eigenvector for one mesh quality to provide an eigenvalue error indicator. Tests show this indicator to be both accurate and reliable.
 
Key Words
    finite elements, natural frequence, error estimation
 
Address
Stephen DB, UNIV SYDNEY,FAC ENGN,FINITE ELEMENT ANAL RES CTR,BLDG J07,SYDNEY,NSW 2006,AUSTRALIA
 

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