اشترك بالحزمة الذهبية واحصل على وصول غير محدود شمرا أكاديميا
تسجيل مستخدم جديدتقرير فني: النمذجة للهياكل البيزوالكترية المركبة باستخدام طريقة الحجم المحدود
Technical Report: Modeling of Composite Piezoelectric Structures with the Finite Volume Method
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الأجهزة البيزي الكهربائية، مثل محركات الصوت المتحركة المتنقلة البيزي الكهربائية، لها بنيات بيزي الكهربائية مركبة. بنية بيزي الكهربائية مركبة تتألف من مجموعة من المواد المربوطة لها، حيث أن واحداً منها على الأقل هو محول بيزي الكهربائي. تم عمل التحليل الرقمي للبنيات البيزي الكهربائية في الماضي بشكل أساسي باستخدام طريقة العنصر المحدود. بديلاً، يقدم النهج المستند إلى الحجم المحدود المزايا التالية: (أ) يمكن تفسير المعادلات التفاضلية العادية الناتجة من عملية التقطيع مباشرة كدوائر مقابلة و (ب) يمكن معالجة الظواهر التي تحدث في الحدود بدقة. يوسع هذا التقرير العمل المنشور في المجلة العلمية IEEE Transactions on UFFC 57 (2010) 7: 1673-1691 بإعطاء طريقة لتنفيذ الشروط الحدودية بين المواد المربوطة في البنيات البيزي الكهربائية المركبة. ينتهي التقرير بمثال واحد لتحليل البنية الأحادية.
Piezoelectric devices, such as piezoelectric traveling wave rotary ultrasonic motors, have composite piezoelectric structures. A composite piezoelectric structure consists of a combination of two or more bonded materials, where at least one of them is a piezoelectric transducer. Numerical modeling of piezoelectric structures has been done in the past mainly with the finite element method. Alternatively, a finite volume based approach offers the following advantages: (a) the ordinary differential equations resulting from the discretization process can be interpreted directly as corresponding circuits and (b) phenomena occurring at boundaries can be treated exactly. This report extends the work of IEEE Transactions on UFFC 57(2010)7:1673-1691 by presenting a method for implementing the boundary conditions between the bonded materials in composite piezoelectric structures. The report concludes with one modeling example of a unimorph structure.
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