STABILITY OF A JOINTED FREE–FREE BEAM UNDER END ROCKET THRUST

✍ Scribed by K.A. Mladenov; Y. Sugiyama

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 447 KB
• Volume: 199
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.1996.0625

✦ Synopsis

This paper deals with the stability of a flexible space structure subjected to an end rocket thrust. The thrust acts upon the structure as a follower non-conservative force, thus the structure can lose its stability by flutter or divergence depending on the system parameters. It is assumed that the articulated free-free beams are subjected to a tangential follower force. The model consists of two viscoelastic beams interconnected by two kinds of joints. One of the joints is composed of a rotational viscoelastic spring while another is a shear viscoelastic spring. A FEM formulation of the articulated structure is performed. Bending flutter or post-flutter divergence are shown to occur depending on the joint rigidity and the internal damping.