کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6703894 1428518 2018 29 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bending, free vibration and buckling analyses of anisotropic layered micro-plates based on a new size-dependent model
ترجمه فارسی عنوان
خمش، ارتعاش آزاد و تجزیه و تحلیل لرزشی از میکرو پلاستیکی لایه ای ناهمسانگرد بر اساس یک مدل وابسته به اندازه جدید
کلمات کلیدی
تنش برشی برشی، تئوری تنش زنانه اصلاح شده، اثرات مقیاس، توابع زیگزاگ، صفحات لمینیت کامپوزیت
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
A new size-dependent composite laminated plate model is proposed in this study based on a re-modified couple stress theory (RMCST) and a zigzag theory. In contrast to the published size-dependent models for composite laminated plates, present model a priori satisfies the continuity conditions of transverse shear stresses (TSSs) at the interfaces. In the present formulation, the discontinuous TSSs obtained from the constitutive relations are replaced by the new continuous TSSs by using the Reissner's Mixed Variational Theorem (RMVT). In addition, the RMVT is utilized to obtain the governing equations and corresponding boundary conditions. Subsequently, the deflections, stresses, frequencies and critical loads of cross-ply simply supported plates are considered to verify the present formulation. The results prove that the scale effects of present size-dependent models are effectively investigated. Moreover, the results predicted by present size-independent models are in accordance with the exact solutions. Eventually, the differences of the mechanical performance among the following three models, i.e. present, Mindlin and Reddy for composite laminated plates are discussed in different modulus and span-to-thickness ratios.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 189, 1 April 2018, Pages 137-147
نویسندگان
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