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دوره 8، شماره 15 - ( بهار و تابستان 1391 1391 )                   جلد 8 شماره 15 صفحات 60-43 | برگشت به فهرست نسخه ها

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Hosseini Hashemi S, Atashipour S R, karimi M, Es'haghi M. Free Vibration Analysis of Functionally Graded Elliptical Plates. Marine Engineering 2012; 8 (15) :43-60
URL: http://marine-eng.ir/article-1-93-fa.html
حسینی هاشمی شاهرخ، آتشی پور سید رسول، کریمی محمود، اسحاقی مهدی. تحلیل ارتعاشات آزاد ورق های بیضوی ساخته شده از مواد FGM. مهندسی دریا. 1391; 8 (15) :43-60

URL: http://marine-eng.ir/article-1-93-fa.html

تحلیل ارتعاشات آزاد ورق های بیضوی ساخته شده از مواد FGM
شاهرخ حسینی هاشمی ، سید رسول آتشی پور*1 ، محمود کریمی2 ، مهدی اسحاقی3
1-
2- tuga
3- کنکوردیا
چکیده:   (15473 مشاهده)
This paper deals with a free vibration analysis of functionally graded elliptical plates with different classical boundary conditions on the basis of polynomial-Ritz method and classical plate theory. The proposed admissible function is capable to obtain accurate natural frequencies of various classical boundary conditions namely, clamped, free and simply supported edges. The mechanical properties of the FG plate are assumed to vary continuously through the thickness of the plate and obey a power law distribution of the volume fraction of the constituents. The convergency of applied polynomial-Ritz method is investigated. In order to verify the accuracy of the present solution, a comprehensive comparison study is performed with the available results in the literature for homogeneous elliptical plate and FG circular plate. Also, the numerical results of the present solution for FG elliptical plate are compared with those of the finite element method (FEM). Finally, the effects of the plate geometry and inhomogeneity on the natural frequencies are investigated and some vibrational mode shapes related to symmetric-symmetric, symmetric-antisymmetric, antisymmetric- symmetric and antisymmetric- antisymmetric states are presented.
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نوع مطالعه: مقاله پژوهشي | موضوع مقاله: سازه های فراساحلی
دریافت: 1390/1/31 | پذیرش: 1392/7/27
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