Control of the dynamic characteristics of passive magnetic composites

The fundamentals of controlling structural vibration of plates treated with a new class of Passive Magnetic Composites (PMCs) are studied. The effecti veness of the PMC treatments in enhancing the damping of characteristics of plates is demonstrated theoretically and experimentally. The equations governing the magneto-elastic characteristics of plates treat ed with PMCs are presented. A finite element model is then developed to des cribe the static and the dynamic characteristics of the different configura tions of the PMCs. The model is validated experimentally at various operati ng conditions. The obtained results suggest the potential of the new class of PMCs as an effective and simple means for controlling structural vibrati ons. (C) 1999 Elsevier Science Ltd. All rights reserved.