Dynamic analysis and drilling degrees of freedom |
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Authors: | Thomas J. R. Hughes Arif Masud Isaac Harari |
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Abstract: | Finite element methods for dynamic analysis employing elements with drilling degrees of freedom are presented. The formulation is based on a variational principle in which displacements and rotations are interpolated independently. The issue of zero masses corresponding to rotational degrees of freedom is addressed and techniques for defining consistent and lumped rotational mass matrices are presented. |
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Keywords: | finite elements independent rotation fields rotational mass matrices elastodynamics |
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