کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6705664 502906 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nonlinear dynamic response of functionally graded shallow shells under harmonic excitation in thermal environment using finite element method
ترجمه فارسی عنوان
پاسخ دینامیکی غیرخطی پوسته های کم عمق درجه بندی شده تحت تحریک هارمونیک در محیط حرارتی با استفاده از روش المان محدود
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
The nonlinear dynamic response of functionally graded material (FGM) shallow shells subjected to thermal and harmonic loads is studied using finite element method. The material properties vary continuously in the thickness direction based on a simple power law distribution. The equations of motion are obtained using modal reduction method based on the third order shear deformation theory. The shooting method is used to obtain appropriate initial conditions for having only steady state response. The effects of thickness ratio and radii of curvature on the dynamic response of FGM shallow shells are studied. Buckled equilibrium positions (BEPs) are obtained for thermally loaded FGM shallow shells with immovable middle or physical neutral surfaces. It is shown that there exist one stable and two unstable BEPs. Then the behavior of an FGM shallow shell subjected to harmonic excitation in thermal environment is investigated. It is seen that the thermally loaded FGM shallow shell has different responses for the same frequency and amplitude of excitation depending on its initial conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 149, 1 August 2016, Pages 351-361
نویسندگان
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