FINITE-ELEMENT ANALYSIS OF THE FLUTTERING PANELS EXCITED BY EXTERNAL FORCES

✍ Scribed by G. SURACE; R. UDRESCU

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 417 KB
• Volume: 224
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.1999.2223

✦ Synopsis

In this article the classical analysis of the static pressure e!ect on #uttering panels is extended to cases of pulse and step excitations. A high order "nite-element methodology is applied within the non-linear elastic, linear aerodynamic theories and a dynamic analysis is performed on a reference structural model (simply supported isotropic square panel). The results which substantiate this study show that during applied excitation the pattern of the motion is changed into damped or limit-cycle oscillations having non-zero mean value. There are also conditions that could increase limit-cycle #utter amplitudes during excitation and these cases need careful investigations for a reliable structural design.