کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
11024253 1701166 2019 36 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Three-dimensional vibration analysis of beams with axial functionally graded materials and variable thickness
ترجمه فارسی عنوان
تجزیه و تحلیل ارتعاش سه بعدی از پرتوها با مواد درجه بندی شده محوری و ضخامت متغیر
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
In this paper, the vibration problem of beams with axial functionally graded materials (FGMs) and variable thickness is firstly investigated by isogeometric analysis (IGA) in conjunction with three-dimensional (3D) theory. Based on guaranteeing geometry exactness of the strength of non-uniform rational B-splines (NURBS), the curves of non-uniform thicknesses of beams are exactly described. Two beams models (slender model and plump model) are taken into account. Then the material properties smoothly varying in axial direction are calculated by two types of material distributions, power-law and exponential law. The requirement for the weak form of FGMs beams is easily satisfied as NURBS can provide higher order derivative. In numerical results, the convergence is demonstrated, then the accuracy of the current work is validated through comparing solutions with those from the commercial package ANSYS. Moreover, the effects of geometrical proprieties, material parameters as well as boundary conditions on the frequency are also examined.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 207, 1 January 2019, Pages 304-322
نویسندگان
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