• Aucun résultat trouvé

A 3D finite element model for the vibration analysis of asymmetric rotating machines

N/A
N/A
Protected

Academic year: 2021

Partager "A 3D finite element model for the vibration analysis of asymmetric rotating machines"

Copied!
19
0
0

Texte intégral

Loading

Figure

Fig. 1. Asymmetric shaft on nonisotropic bearings: (a) first beam mode in the x-direction; (b) representation in the modal basis.
Fig. 2 illustrates the two parametric quasimodes of Eq. (2) computed for a subcritical rotational speed O  ¼ 0:34 and a harmonic truncature order j max ¼ 5
Fig. 3. Parametric quasimodes F x ðtÞ for O  ¼4 and j max ¼ 2: (a) orbit of the mass; (b) power spectral density of F x ðtÞ.
Fig. 5. Evolution of eigenvalues against rotational speed O for j max ¼ 2: (a) real part; (b) imaginary part.
+7

Références

Documents relatifs

The rapid growth in the use of composite materials in structures requires the development of structure mechanics for modelling the mechanical behavior and the analysis of

For this simulation, half of the patient’s weight was applied onto the foot model while in contact with a horizontal finite element plate (Fig 1 B) having the same number

Dans cette partie de notre système nous allons expliquer l’algorithme de découverte, la partie responsable de chercher les services satisfaisants la requête du client. L’algorithme

We present hereafter the formulation of a Timoshenko finite element straight beam with internal degrees of freedom, suitable for non linear material problems in geomechanics (e.g.

The paper presents the implementation of a sensitivity-based FE model updating process for a new twelve-span prestressed concrete bridge using ambient vibration data.. The

The present work demonstrates an original one-dimensional (1D) analytical model, dedicated to a Rosen-type PT and simulation results are successively compared

Pour les trouver, il faut recourir à des techniques informatiques telles que « l’exploration de données », les « réseaux neuronaux » et « l’apprentissage machine », qui

Quantifier elimination over the reals is a central problem in computational real algebraic geometry, polynomial system solving and symbolic computation.. Given a semi-algebraic