EFFECTS OF GEOMETRICAL ASYMMETRIES OF STRUCTURE ON DYANMICAL CHARACTERISTICS OF TWO COUPLED CONTROL SURFACES

✍ Scribed by Y.-R. Yang

• Book ID: 102609937
• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 371 KB
• Volume: 199
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.1996.0615

✦ Synopsis

The dynamical characteristics of two coupled control surfaces with structural asymmetries are studied. The results show that a first order and a second order perturbation method can be applied to predict free vibration frequencies and modal shapes accurately. If the stiffness value of the operational system (or asymmetrical degree) is large enough, a small asymmetrical parameter can lead to the vibration isolation of one control surface, which means that the vibrating amplitudes of one control surface are large, but those of the other control surface are close to zero. In order to avoid such vibration isolation of control surfaces, the operation stiffness (or the asymmetrical degree) must be decreased as far as possible in the structural designs of two coupled control surfaces.