Spurious modes in finite-element discret
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W.A. Mulder
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Article
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1999
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Elsevier Science
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English
β 270 KB
If higher-order finite elements are used to discretize the wave equation, spurious modes may occur. These modes are classified as unphysical and supposedly make elements of high order useless for accurate computations. This is in conflict with numerical experiments which appear to provide good resul