کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
254131 503051 2007 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Vibration and stability of rotating polar orthotropic sandwich annular plates with a viscoelastic core layer
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Vibration and stability of rotating polar orthotropic sandwich annular plates with a viscoelastic core layer
چکیده انگلیسی

A sandwich annular plate is built with two face layers of polar orthotropic material and a viscoelastic core layer. The non-axisymmetric vibration and stability problem of the rotating sandwich plate are analyzed by using the finite element method. By employing the discrete layer annular element and Hamilton’s principle, the finite element equations of motion that consider the effects of transverse shear and rotary inertia are derived. The viscoelastic material in the core layer is assumed to be incompressible, and its extensional and shear moduli are described by complex quantities. Complex-eigenvalued problems are then solved. The effects of various properties, such as orthotropic properties of face layers, and the viscoelastic core layer stiffness and thickness are discussed. Numerical results show that the larger modulus ratio and higher rotational speed tend to increase the nature frequency of the sandwich annular plate system. In addition, the critical speeds decrease while increasing the thickness of the viscoelastic core layer.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 78, Issue 1, March 2007, Pages 45–57
نویسندگان
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