Research Article
Vibration Analysis of Collecting Electrodes by means of the Hybrid Finite Element Method
Table 1
Comparison of features of the finite element method and hybrid finite element method.
| Feature | Finite element method | Hybrid element method |
| Generalized coordinates | Displacements of nodes of elements (elastic coordinates) (36) | Displacements and rotations of rigid elements (rigid coordinates) (22) |
| Stiffness matrix | Interpolation of field displacements and rotations by means of continuous functions | Interpolation of field displacements and rotations by means of continuous functions | Additional transformation of elastic coordinates to rigid coordinates:
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| Mass matrix | Interpolation of field displacements and rotation velocities by means of continuous functions | Inertial moments are taken into account | Additional operations in order to use lumped mass |
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