POSTBUCKLING AND VIBRATION CHARACTERISTICS OF PIEZOLAMINATED COMPOSITE PLATE SUBJECT TO THERMO-PIEZOELECTRIC LOADS

✍ Scribed by I.K. OH; J.H. HAN; I. LEE

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 276 KB
• Volume: 233
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.1999.2788

✦ Synopsis

Postbuckling and vibration analyses considering large thermopiezoelastic de#ections are performed for fully symmetric and partially eccentric piezolaminated composite plates. Non-linear "nite element equations based on the layerwise displacement theory are formulated for piezolaminated plates subject to thermal piezoelectric loads. The results demonstrate a methodology for raising the thermal buckling temperature and decreasing the thermal postbuckled de#ection. Vibration characteristics under complex thermopiezoelectric loads are investigated in the prebuckling and postbuckling regions. For fully distributed piezolaminates, this study shows that excessive bending moments for the suppression of thermally buckled de#ection may cause another type of structural instability. In addition, the e!ective placement of piezoceramic patches is studied to improve suppression of thermally buckled de#ection for the partially segmented piezolaminates.