SEGMENTED SENSORS AND ACTUATORS FOR THICK PLATES AND SHELLS PART II: PARAMETRIC STUDY

✍ Scribed by P.C. DUMIR; G.P. DUBE; C. BALAJI KUMAR

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 165 KB
• Volume: 226
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.1999.2315

✦ Synopsis

A parametric study is presented here for the modal sensitivity and actuation factors and controlled damping ratio for the rectangularly segmented distributed piezoelectric sensor and actuator layers laminated on simply supported thick rectangular plates and circular cylindrical shells made of cross ply composite laminate. The analytical expressions of these entities, developed in Part I of this two-part study, based on a Flugge-type "rst order shear deformation theory (FSDT) and classical lamination theory (CLT), are numerically evaluated to illustrate the e!ect of the thickness parameter. The contribution of the membrane and bending strains to sensitivity and actuation factors is computed for plates and shells for the lowest mode and a few higher modes. It has been concluded that the classical lamination theory is inadequate for the analysis of spatial actuation and control of all modes for thick plates and shells as well as for the higher modes of thin composite plates and shells.