Finite Elements for a Beam System With Nonlinear Contact Under Periodic Excitation

Abstract : Solar arrays are structures which are connected to satellites; during launch, they are in a folded position and submitted to high vibrations. In order to save mass, the flexibility of the panels is not negligible and they may strike each other; this may damage the structure. To prevent this, rubber snubbers are mounted at well chosen points of the structure; a prestress is applied to the snubber; but it is quite difficult to check the amount of prestress and the snubber may act only on one side; they will be modeled as one sided springs (see figure 2). In this article, some analysis for responses (displacements) in both time and frequency domains for a clamped-clamped Euler-Bernoulli beam model with a spring are presented. This spring can be unilateral or bilateral fixed at a point. The mounting (beam +spring) is fixed on a rigid support which has a sinusoidal motion of constant frequency. The system is also studied in the frequency domain by sweeping frequencies between two fixed values, in order to save the maximum of displacements corresponding to each frequency. Numerical results are compared with exact solutions in particular cases which already exist in the literature. On the other hand, a numerical and theoretical investigation of nonlinear normal mode (NNM) can be a new method to describe nonlinear behaviors, this work is in progress.
Keywords : Nonlinear dynamics
Type de document :
Communication dans un congrès
Etude de la propagation ultrasonore en milieux non homogènes en vue du contrôle non-destructif, Jun 2008, France. pp.149, 2008
Liste complète des métadonnées

Littérature citée [8 références]  Voir  Masquer  Télécharger

https://hal.univ-cotedazur.fr/hal-00418504
Contributeur : Hamad Hazim <>
Soumis le : dimanche 11 octobre 2009 - 12:53:12
Dernière modification le : vendredi 12 janvier 2018 - 01:51:45
Document(s) archivé(s) le : mardi 15 juin 2010 - 22:06:32

Fichiers

article_1.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : hal-00418504, version 1
  • ARXIV : 0910.2092

Citation

Hamad Hazim, B. Rousselet. Finite Elements for a Beam System With Nonlinear Contact Under Periodic Excitation. Etude de la propagation ultrasonore en milieux non homogènes en vue du contrôle non-destructif, Jun 2008, France. pp.149, 2008. 〈hal-00418504〉

Partager

Métriques

Consultations de la notice

264

Téléchargements de fichiers

294