کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1900103 1534277 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Piezoelectric-sensitive mode of lamb wave in one-dimensional piezoelectric phononic crystal plate
ترجمه فارسی عنوان
حالت حساس پیزوالکتریک موج شانه در صفحات کریستال فونیک پیزوالکتریک یک بعدی
کلمات کلیدی
ساختارهای دوره ای پیزوالکتریک، حالت انتقال، حالت حساس پیزوالکتریک
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
چکیده انگلیسی


• We investigate the transmission modes in piezoelectric phononic crystal plate.
• The influences of piezoelectricity and electrical boundary conditions are studied.
• An important mode named as piezoelectric-sensitive mode is defined.
• The physical mechanism of piezoelectric-sensitive mode is discussed.

We investigate the transmission modes in one-dimensional piezoelectric phononic crystal plate, which is consisted of piezoelectric ceramics placed periodically in epoxy. The influences of piezoelectricity and different electrical boundary conditions on the Lamb waves in the composite plate are studied in detail, and an important elastic wave mode named as piezoelectric-sensitive mode (PSM) is defined. Furthermore, the influences of the piezoelectric constants, the filling fraction and the ratio of thickness to lattice pitch on PSM are given, and the physical mechanism of PSM is also discussed. The numerical results show that PSM has a relatively larger frequency shift and significant change in the displacement distribution when piezoelectricity is considered; the electromechanical coupling coefficient of PSM is much larger than the other modes. It reveals that PSM is an important and useful mode in piezoelectric periodic structures. This investigation is helpful in controlling the band gaps and also gives a potential application in design of sensing system and different piezoelectric devices.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wave Motion - Volume 54, April 2015, Pages 66–75
نویسندگان
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