کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1703392 1519405 2015 20 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nonlinear vibration of functionally graded fiber-reinforced composite laminated cylindrical shells in hygrothermal environments
ترجمه فارسی عنوان
لرزش غیرخطی پوسته های استوانه ای چند لایه کامپوزیتی تقویت شده عملکردی در محیط های گرمابی
کلمات کلیدی
پوسته استوانه ای ناهمسانگردی، مواد درجه بندی شده عملکردی، ارتعاش غیر خطی، اثر هورمترمال
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
چکیده انگلیسی

The effect of hygrothermal conditions on the linear and nonlinear free flexural vibration of anisotropic shear deformable laminated cylindrical shells is investigated. The cylindrical shell is made of fiber-reinforced composites (FRCs) with the reinforcement being distributed either uniformly (UD) or functionally graded (FG) of piece-wise type along the thickness of the shells. The motion equations are based on a higher order shear deformation shell theory with a von Kármán-type of kinematic nonlinearity. The hygrothermal effects are also included, and the material properties of FRCs are estimated through a micromechanical model and are assumed to be temperature-dependent and moisture-dependent. The equations of motion are solved by a singular perturbation technique along with a two-step perturbation approach to determine the linear and nonlinear frequencies of the FRC laminated cylindrical shells. Detailed parametric studies are carried out to investigate effects of material property gradient, the temperature change, the degree of moisture concentration, shell geometric parameter, stacking sequence, as well as the end conditions on the vibration characteristics of FRC shells with polymer matrix. The results show that the temperature/moisture variation has a moderately effect on the natural frequencies of the FRC cylindrical shells, but only has a small effect on the nonlinear to linear frequency ratios of the same shell.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Mathematical Modelling - Volume 39, Issues 5–6, March 2015, Pages 1480–1499
نویسندگان
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