16 آذر 1400

محمدرضا گل بهار حقیقی

مرتبه علمی:
نشانی: دانشکده مهندسی - گروه مهندسی مکانیک
تحصیلات: مهندسی مکانیک
تلفن:
دانشکده: دانشکده مهندسی

مشخصات پژوهش

عنوان Nonlinear free viberation of skew nonoplates with surface and small scale effects
نوع پژوهش مقالات در نشریات
کلیدواژه‌ها
ثبت نشده‌است!
مجله THIN-WALLED STRUCTURES
شناسه DOI
پژوهشگران پرویز ملک زاده (نفر اول) ، محمدرضا گل بهار حقیقی (نفر دوم) ، م شجاعی (نفر سوم)

چکیده

The nonlinear free flexural vibration of skew nanoplates is studied by considering the influences of free surface energy and size effect (smallscale) simultaneously. The formulations are derived based on classical plate theory (CPT) in conjunction with nonlocal and surface elasticity theories using Hamiltons principle. Greens strain tensor together with von K?rm?n assumptions is employed to model the geometrical nonlinearity. The free surfaces are modeled as two-dimensional membranes adhering to the underlying bulk material without slipping. The solution algorithm is based on the transformation of the governing differential equation from the physical domain to a rectangular computational one, and discretization of the spatial derivatives by employing the differential quadrature method (DQM) as an efficient and accurate numerical tool. The effect of small scale parameter and surface effect together with the geometrical parameters and boundary conditions on the nonlinear frequency parameters of the skew nanoplates are studied.