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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 |
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Natural frequency error estimation for 3D brick elements |
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Stephen DB, Steven GP
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| Abstract | ||
| 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 | ||